PRODUCT REVIEW
Best Cordless Hammer Drill in India 2026
We analysed 12 cordless hammer drills sold in India. The Makita DHP490 leads on masonry specs, and the Bosch GSB 183-Li has the cleanest Indian review record.
By Naveen Bhavnani
Updated
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On this page
Other picks to consider
Already covered the winner above — here are the picks for specific needs.
Bosch GSB 183-Li 18V Brushless Impact Drill (2×2.0Ah)
INGCO CIDLI20558 20V Brushless Impact Drill Kit (2×2.0Ah)
iBELL Vormir VR BD21-45 20V Brushless Impact Drill (1×2.0Ah)
Cordless hammer drills compared side by side
How the shortlist stacks up. Scroll sideways on mobile.
| WWCD Score | Product | Impact rate | Masonry | Torque | Chuck | Motor | Battery | Latest India review | Price | Deal |
|---|---|---|---|---|---|---|---|---|---|---|
| 8.7/10 | Makita DHP490F001 | 28,500 bpm | 13 mm | 65 Nm | 13 mm | Brushless | 18V · 1×3.0Ah | Aug 2026 | ₹11,689 | Check Price |
| 8.4/10 | Bosch GSB 183-Li | 24,000 bpm | 10 mm | 56 Nm | 13 mm | Brushless | 18V · 2×2.0Ah | Aug 2026 | ₹9,999 | Check Price |
| 8.3/10 | DeWalt DCD7781D2-IN | 29,750 bpm | — | — | 13 mm | Brushless | 18V · 2×2.0Ah | Jan 2026 | ₹16,922 | Check Price |
| 8.2/10 | Bosch GSB 185-Li | 27,000 bpm | 10 mm | 50 Nm | 13 mm | Brushless | 18V · 1×2.0Ah | Aug 2026 | ₹12,122 | Check Price |
| 8.1/10 | INGCO CIDLI20558 | 30,000 bpm | — | 55 Nm | 13 mm | Brushless | 20V · 2×2.0Ah | Sep 2026 | ₹5,769 | Check Price |
| 8.1/10 | DeWalt DCD776D2T | 25,500 bpm | 13 mm | 42 Nm | 13 mm | Brushed | 18V · 2×2.0Ah | Feb 2026 | ₹12,999 | Check Price |
| 7.6/10 | Stanley FATMAX SCD711D2KA | 25,500 bpm | — | 50 Nm | 13 mm | Brushed | 20V · 2×2.0Ah | Jul 2026 | ₹13,999 | Check Price |
| 7.2/10 | iBELL Vormir VR BD21-45 | — | 13 mm | 45 Nm | 13 mm | Brushless | 20V · 1×2.0Ah | Aug 2026 | ₹4,499 | Check Price |
| 7.2/10 | iBELL One Power BD20-80 | 26,250 IPM | — | 80 Nm | 13 mm | Brushless | 20V · 1×2.0Ah | Aug 2026 | ₹6,961 | Check Price |
| 7.0/10 | Makita HP333DWYE | 25,500 bpm | 8 mm | 28 Nm | 10 mm | Brushed | 12V · 2×1.5Ah | Nov 2025 | ₹14,581 | Check Price |
| 6.6/10 | Bosch GSB 120-LI | 18,750 bpm | — | 30 Nm | 10 mm | Brushed | 12V · 2×2.0Ah | Sep 2026 | ₹8,499 | Check Price |
| 6.5/10 | Stanley SCH10D1-IN | — | — | 30 Nm | 10 mm | Brushed | 12V · 1×2.0Ah | Apr 2026 | ₹4,009 | Check Price |
Is a cordless hammer drill the tool you need?
We cover three kinds of drill, and each one answers a different job. This page is the middle one.
- Walls, but cordless. You are in the right place. A hammer drill adds a percussion mode that cuts brick and concrete.
- Walls, on a budget. A corded drill machine set gives 600W and a 13 mm concrete rating for under ₹4,000.
- No walls at all. For furniture, fittings and screws, a cordless drill driver is lighter and cheaper.
Cordless hammer drill reviews: impact rate, masonry and battery
Specs, the honest pros and cons, and who each one is for.
Makita DHP490F001 18V LXT Brushless Hammer Drill (1×3.0Ah)
The most capable cordless hammer drill on Amazon.in on paper, on the deepest battery platform in India.
- Impact rate
- 28,500 bpm
- Masonry capacity
- 13 mm
- Max torque
- 65 Nm
- Chuck
- 13 mm keyless
- Motor
- Brushless
- Battery
- 18V · 1×3.0Ah
- Platform
- Makita LXT 18V
- Weight
- 1.7 kg
- Warranty
- 1 yr tool · 6 mo battery
Every published performance figure points the same way. This is the strongest 18V hammer drill in the field, at a price well under what DeWalt charges for similar output. It is also the only listing here that publishes all of its capacities. The catch is evidence. Two Indian reviews is almost nothing, so you are buying Makita engineering rather than a proven Indian track record.
- ＋ Leads the field on 28,500 bpm and 65 Nm with a full 13 mm masonry rating
- ＋ Brushless motor on Makita LXT — India's widest 18V platform
- ＋ 3.0Ah pack is the largest single battery here
- ＋ XPT sealing against dust and moisture
- ＋ 20-stage clutch and a 2-speed gearbox
- ＋ Light at 1.7 kg for this much torque
- － Only 2 verified India reviews so far
- － One battery in the box
- － Battery and charger get just 6 months of warranty
- － New India listing with little local service history
Bosch GSB 183-Li 18V Brushless Impact Drill (2×2.0Ah)
The safest buy here — a brushless Bosch with two batteries and the field's cleanest review record.
- Impact rate
- 24,000 bpm
- Masonry capacity
- 10 mm
- Max torque
- 56 Nm
- Chuck
- 13 mm keyless
- Motor
- Brushless
- Battery
- 18V · 2×2.0Ah
- Platform
- Bosch 18V Professional
- Weight
- 1.6 kg
- Warranty
- 1 year
If you want the pick least likely to disappoint, this is it. You get a brushless motor, two batteries and India's best-supported 18V platform. The 29 recent Indian buyers average 4.45, with only 7% negative. Accept the 10 mm masonry ceiling and it is excellent value at ₹9,999. The one-battery version costs ₹7,180, so the second pack effectively costs ₹2,819 — about the price of a spare.
- ＋ Best review record here — 29 recent India reviews averaging 4.45
- ＋ Two 2.0Ah batteries so one charges while the other works
- ＋ Bosch 18V packs are the easiest to buy and service in India
- ＋ Cheapest brushless 18V hammer drill from a big-four brand
- ＋ 56 Nm — more than the DeWalt DCD776 for less money
- － Masonry rating is only 10 mm
- － No side handle — buyers report wrist kick when a bit binds
- － 1-year warranty is half what DeWalt and Stanley give
- － Two buyers got a battery that was dead or failed early
DeWalt DCD7781D2-IN 18V XR Brushless Hammer Drill (2×2.0Ah)
The fastest-hammering compact brushless drill here — on a review stream that has gone quiet.
- Impact rate
- 29,750 bpm
- Masonry capacity
- Not published
- Max torque
- Not published
- Chuck
- 13 mm keyless
- Motor
- Brushless
- Battery
- 18V · 2×2.0Ah
- Platform
- DeWalt XR 18V
- Weight
- 1.48 kg
- Warranty
- 2 years
On impact rate and weight, this is the pick for repeated RCC work. The handful of Indian buyers who reviewed it are all positive. One says it drills RCC easily even with a 12 mm bit. But the newest review is eight months old. DeWalt also publishes almost no capacity figures for the India SKU. So you pay nearly ₹7,000 more than the Bosch on thin, ageing evidence.
- ＋ Second-highest impact rate here at 29,750 bpm
- ＋ A buyer reports it drills RCC easily with a 12 mm bit
- ＋ Lightest brushless 18V unit here at 1.48 kg
- ＋ Two batteries and a 2-year warranty
- ＋ All 10 verified India reviews are 4 or 5 stars
- － No verified India review since January 2026
- － DeWalt publishes no torque or masonry capacity for this SKU
- － ₹16,922 is a big premium over the Bosch GSB 183-Li
Bosch GSB 185-Li 18V Brushless Hammer Drill (1×2.0Ah)
The best-proven Bosch here — as long as you accept it is not a concrete tool.
- Impact rate
- 27,000 bpm
- Masonry capacity
- 10 mm
- Max torque
- 50 Nm
- Chuck
- 13 mm keyless
- Motor
- Brushless
- Battery
- 18V · 1×2.0Ah
- Platform
- Bosch 18V Professional
- Weight
- 1.4 kg
- Warranty
- 1 year
Sixty Indian buyers and steady 100+ monthly sales make this the most thoroughly validated drill in the field. It is also beautifully compact. Believe the reviewers about masonry, though. One writes "Not a hard hitter - drilling concrete will be difficult". The GSB 183-Li gives you two batteries and more torque for less money.
- ＋ Deepest evidence base here — 60 verified India reviews averaging 4.20
- ＋ Most compact body in the field at about 1.4 kg
- ＋ 27,000 bpm from a brushless motor
- ＋ Sells 100+ units a month
- ＋ Owners report years of service
- － Buyers say plainly it is not a concrete tool
- － One battery at ₹12,122 against two on the cheaper GSB 183-Li
- － Several shipments arrived with a battery or accessory missing
- － 1-year warranty only
INGCO CIDLI20558 20V Brushless Impact Drill Kit (2×2.0Ah)
Brushless, 30,000 bpm, two batteries and 47 accessories — for under ₹6,000.
- Impact rate
- 30,000 bpm
- Masonry capacity
- Not published
- Max torque
- 55 Nm
- Chuck
- 13 mm keyless metal
- Motor
- Brushless
- Battery
- 20V · 2×2.0Ah
- Platform
- INGCO 20V
- Clutch
- 22+1+1
- Warranty
- Not published
On contents and published performance per rupee, this is the most aggressive offer in the category. Its short review record is spotless, and every review landed in the last four months. The unknowns are what you would expect at the price. There is no published warranty, no masonry figure and a service network that cannot match the big four.
- ＋ Highest published impact rate here at 30,000 bpm
- ＋ Two batteries plus a 47-piece kit and 3 masonry bits for ₹5,769
- ＋ 13 mm metal chuck with spindle lock
- ＋ All 8 verified India reviews are 4 or 5 stars
- ＋ A repeat buyer calls it their fourth INGCO machine
- － Only 8 verified India reviews on a listing under a year old
- － Publishes no masonry capacity or warranty term
- － Service network far thinner than the big four
- － Narrow 20V platform with little onward use
DeWalt DCD776D2T 18V XR Hammer Drill Driver (2×2.0Ah)
Genuine 13 mm masonry capacity and a 2-year warranty, on a decade-old brushed design.
- Impact rate
- 25,500 bpm
- Masonry capacity
- 13 mm
- Max torque
- 42 Nm
- Chuck
- 13 mm single-sleeve
- Motor
- Brushed
- Battery
- 18V · 2×2.0Ah
- Platform
- DeWalt XR 18V
- Weight
- 1.7 kg
- Warranty
- 2 years
This is the cheapest route here to a full 13 mm masonry rating from a big-four brand, with two batteries and a 2-year warranty. Set against that, it is a brushed motor with the lowest torque of the 18V group. Its Indian review stream has also effectively stopped. The 4.09 average describes buyers from 2017 to 2023, not today's stock.
- ＋ Full 13 mm masonry capacity — joint-best here
- ＋ Two batteries and a TSTAK stacking case
- ＋ 2-year warranty
- ＋ Nearly a decade on sale with 445 ratings
- ＋ Single-sleeve chuck for one-handed bit changes
- － Only 3 verified India reviews in the last two years
- － Brushed motor from around 2016
- － Lowest torque of the 18V drills at 42 Nm
- － Long-running complaints about battery runtime
Stanley FATMAX SCD711D2KA 20V Hammer Drill with 100-Piece Kit
The biggest accessory bundle here, wrapped around a mid-tier brushed drill.
- Impact rate
- 25,500 bpm
- Masonry capacity
- Not published
- Max torque
- 50 Nm
- Chuck
- 13 mm keyless
- Motor
- Brushed
- Battery
- 20V · 2×2.0Ah
- Platform
- Stanley FATMAX 20V
- Weight
- 1.5 kg
- Warranty
- 2 years
The drill itself is competent and the 2-year warranty is welcome. But at ₹13,999 you pay brushless money for a brushed motor. The 100-piece kit that justifies the price is exactly what buyers complain about. They report bits rusting inside three months and items missing from the box.
- ＋ 100 accessories plus two batteries — the largest bundle here
- ＋ 2-year warranty
- ＋ Battery charge indicator on the pack
- ＋ 23+1 clutch and a 2-speed gearbox
- ＋ Broad Stanley retail and service presence
- － 3 of its 7 verified India reviews are 1-star
- － Buyers report the bundled bits rusting within 2.5 months
- － Brushed motor at a brushless price
- － No published masonry capacity
iBELL Vormir VR BD21-45 20V Brushless Impact Drill (1×2.0Ah)
The cheapest brushless 13 mm hammer drill on Amazon.in with a current, credible review record.
- Impact rate
- Not published
- Masonry capacity
- 13 mm (claimed)
- Max torque
- 45 Nm
- Chuck
- 13 mm keyless
- Motor
- Brushless
- Battery
- 20V · 1×2.0Ah
- Platform
- iBELL Vormir 20V
- Clutch
- 20+3
- Warranty
- 1 year
For under ₹5,000 this delivers a brushless motor and a 13 mm chuck. Sixteen recent Indian buyers broadly back it up. They are clear-eyed, though, and one says it is "nowhere close" to ₹10,000 tools. Treat the missing bpm figure and the single small battery as the real limits.
- ＋ Brushless motor and 13 mm chuck for ₹4,499
- ＋ 16 verified India reviews averaging 4.25 — 10 of them recent
- ＋ 1-hour charger plus a carry box and LED light
- ＋ Buyers call it "Exceptional for the price"
- － No published impact rate anywhere
- － One battery — two buyers report 15-20 minutes of work per charge
- － Spec table says 12 V where the title says 20 V
- － Vormir packs may not fit iBELL's One Power tools
iBELL One Power BD20-80 20V Brushless Impact Drill (1×2.0Ah)
The highest torque figure here, undercut by an aluminium chuck and a motor-only warranty.
- Impact rate
- 26,250 IPM
- Masonry capacity
- Not published
- Max torque
- 80 Nm (claimed)
- Chuck
- 13 mm keyless aluminium
- Motor
- Brushless
- Battery
- 20V · 1×2.0Ah
- Platform
- iBELL One Power 20V
- Clutch
- 20+3
- Warranty
- 12 months (motor only)
Strong power and a decent recent record for ₹6,961, and 28 Indian buyers is real evidence at this price. But the aluminium chuck is a meaningful compromise on a hammer drill. The warranty also excludes the battery, which is exactly what buyers most often report failing.
- ＋ Highest claimed torque here at 80 Nm
- ＋ 28 verified India reviews averaging 4.14
- ＋ 2-speed gearbox with 20+3 clutch and a BMC case
- ＋ Buyers rate the raw power highly
- － Warranty covers the motor only — not battery or gearbox
- － Aluminium chuck is softer under percussion than steel
- － Repeated reports of the battery dying within minutes
- － One battery only
Makita HP333DWYE 12V CXT Hammer Driver Drill (2×1.5Ah)
A lovely compact 12V Makita at a price that makes no sense against its own 18V sibling.
- Impact rate
- 25,500 bpm
- Masonry capacity
- 8 mm
- Max torque
- 28 Nm
- Chuck
- 10 mm keyless
- Motor
- Brushed
- Battery
- 12V · 2×1.5Ah
- Platform
- Makita CXT 12V
- Weight
- 1.1 kg
- Warranty
- Not published
As a light, precise drill for furniture and fittings it is a pleasure. But it costs ₹2,892 more than Makita's own 18V brushless hammer drill. For that you get 28 Nm against 65 Nm, and 8 mm of masonry against 13 mm. A reviewer confirms masonry is "hard to pierce".
- ＋ Pocketable at 193 mm and about 1.1 kg
- ＋ Makita build with a 20-stage clutch
- ＋ Two batteries and a case
- ＋ 25,500 bpm is respectable for 12 V
- － Costs more than Makita's own 18V brushless DHP490
- － 8 mm masonry capacity is the lowest here
- － No verified India review since November 2025
- － Narrow 12V CXT platform in India
Bosch GSB 120-LI 12V Impact Drill Driver (2×2.0Ah, 23-Piece Set)
A well-proven light-duty driver that Indian buyers keep discovering is not a concrete drill.
- Impact rate
- 18,750 bpm
- Masonry capacity
- Not published
- Max torque
- 30 Nm
- Chuck
- 10 mm keyless
- Motor
- Brushed
- Battery
- 12V · 2×2.0Ah
- Platform
- Bosch 12V
- Weight
- 1.1 kg
- Warranty
- 1 year (listing also says 6 months)
As a compact screwdriver-and-light-drill with Bosch backing, it earns its long sales record. As a hammer drill it does not. The most frequent complaint from recent Indian buyers is that it will not drill a cement wall. One writes "It claims for the drilling in concrete. But false statement".
- ＋ Longest track record here with 1,130 ratings
- ＋ Two batteries plus a 23-piece set
- ＋ Compact at about 1.1 kg with a 20-stage clutch
- ＋ Happy owners use it for screwdriving and light drilling
- － Buyers repeatedly say it will not drill cement walls
- － Lowest impact rate here at 18,750 bpm
- － 24% of the last 100 India reviews are 1-2 stars
- － Reports of batteries dying within six months
Stanley SCH10D1-IN 12V Hammer Drill Driver (1×2.0Ah)
The budget entry point — honest about price, not about hammering.
- Impact rate
- Not published
- Masonry capacity
- Not published
- Max torque
- 30 Nm
- Chuck
- 10 mm keyless
- Motor
- Brushed
- Battery
- 12V · 1×2.0Ah
- Platform
- Stanley 12V
- Weight
- 1.3 kg
- Warranty
- Not published
At ₹4,009 with a battery, charger and fifteen fairly positive Indian reviews, this is a sensible first cordless drill for screws and fittings. It is not a masonry tool. Stanley publishes no impact rate. A buyer who tried concrete writes "Can barely make a hole even with the hammer function".
- ＋ Cheapest cordless hammer drill here from a brand with Indian service
- ＋ 15 verified India reviews averaging 4.13
- ＋ Battery charge indicator on the pack
- ＋ Good for screws and light household work
- － No published impact rate or masonry capacity
- － Buyers say the hammer mode barely makes a hole
- － Brushed motor that visibly sparks
- － One battery and a narrow 12V platform
Which cordless hammer drill to buy
A pick earns its place here by drilling real Indian walls, then by what recent verified buyers report. If you'd rather skip the full comparison, these are the two worth choosing between.
For most people, buy the Makita DHP490F001 (₹11,689). It leads the field on 28,500 bpm, 65 Nm and a full 13 mm concrete rating, on Makita's deep 18V LXT platform. The catch is evidence: only two Indian buyers have reviewed it. Want a longer track record instead? The Bosch GSB 183-Li (₹9,999) has 29.
Check Price on Amazon →Want to spend less? Get the INGCO CIDLI20558 (₹5,769). It is brushless, publishes 30,000 bpm and ships two batteries plus 47 accessories. Every verified Indian review so far is four or five stars. The trade-off is thin service and no published warranty term.
Check Price on Amazon →A rotary-only drill driver is lighter, cheaper and has a finer clutch for furniture and fittings.
Compare cordless drill drivers →How to choose a cordless hammer drill
-
First, make sure you are buying the right tool
Four different tools get sold as "hammer drills" on Amazon.in. Check the chuck and the mode collar, not the title.
- Cordless hammer drill. A 3-jaw chuck plus a percussion mode for masonry. This list.
- Drill driver. Rotation only, so no real concrete — see our cordless drill driver picks.
- Impact driver. Hex bits and rotational blows, an entirely different mechanism. No chuck, no masonry.
- SDS-Plus rotary hammer. Different bits, and overkill for general work.
Corded is the cheaper route to wall power — compare our corded drill machine sets.
-
Power considerations: read impact rate next to rpm
Blows per minute (bpm) is the closest thing to a masonry figure. Read it with the rpm, and trust the masonry capacity in millimetres more.
- The range here is wide. It runs from 18,750 bpm on the Bosch GSB 120-LI to 30,000 on the INGCO.
- Bpm is tied to speed. The blows come from two cam plates driven by the spindle. So bpm is 14-19 times the rpm on every tool here.
- Listings often hide it. Amazon omits bpm on about half of these, even when the brand publishes it.
-
12V hammer drills do not really drill Indian concrete
This is the most consistent finding in the reviews we analysed. If you are buying to put anchors into concrete, start at 18V.
- They have a hammer mode. The Bosch GSB 120-LI, Makita HP333DWYE and Stanley SCH10D all carry one.
- Buyers say it does not work. "I bought this product expecting it to work on cement walls, but it did not work at all."
- They are still good tools. Each is a light, compact driver that manages plaster and soft brick.
-
Brushless vs brushed motors
Buy brushless if the tool will see regular masonry work. At ₹9,999 the Bosch GSB 183-Li is brushless, so there is little reason to buy brushed above that price.
- No brushes to wear. A brushless motor has no sliding contacts, so its life is limited only by its bearings.
- More holes per charge. It turns more of the battery into work and runs cooler under load.
- No sparking. Brushed 12V units here draw complaints about visible sparks. Brushless tools do not.
-
Chuck size matters
A 13 mm chuck is the safer choice. It usually comes attached to a stronger tool.
- 10 mm covers most household holes. Wall-plug bits are typically 6-8 mm.
- 13 mm adds reach. It fits bigger masonry bits, hole saws, spade bits and wire brushes.
- It is a proxy for class. Every 13 mm drill here had more torque and a higher masonry rating than the 10 mm ones.
-
Battery ecosystem: the platform is a bigger decision than the drill
A cordless drill starts a battery commitment. Ask what else the pack will run, and whether you can buy another in three years.
- The deep platforms. Bosch 18V Professional, DeWalt XR 18V and Makita LXT 18V have real Indian service.
- The narrow ones. INGCO and iBELL 20V packs are cheap but fit few other tools.
- Watch for splits. iBELL One Power and Vormir packs may not interchange. Makita CXT and LXT never do.
-
Two batteries versus one
Work out what the second battery actually costs you. Charging takes 35-60 minutes on most of these, so one pack limits long jobs.
- Bosch GSB 183-Li. ₹7,180 with one pack, ₹9,999 with two. The extra ₹2,819 is fair for a spare.
- Stanley SCH10D. The second pack adds ₹2,860 to a ₹4,009 tool. That is poor value.
- One big pack can win. The Makita DHP490 ships one 3.0Ah battery instead of two small ones.
-
Check a battery is actually in the box
Several attractively priced tools ship with no battery and no charger. We excluded them from this list for that reason.
- The model suffix is the tell. DeWalt -N, -NT and -B mean bare. D2, S2 and P2 mean a kit. Bosch calls bare tools "Solo".
- The cost adds up. A battery and charger add roughly ₹4,000-7,000.
- Bare can still make sense. If you already own batteries on that platform, it is the cheapest upgrade.
-
Buy carbide masonry bits — SDS bits will not fit
A hammer drill is only as good as the bit in it. Budget for a good set of carbide-tipped masonry bits.
- HSS bits will not cut concrete. They lose their edge in seconds.
- Bundled bits disappoint. Stanley SCD711D2KA owners report rust within about 2.5 months.
- SDS-Plus bits are for rotary hammers. Their splined shank will not grip safely in a 3-jaw chuck.
- Wear a dust mask. Drilling concrete releases crystalline silica dust, which can cause silicosis.
-
Watch the seller on Bosch and DeWalt listings
Some complaints have nothing to do with the tool. Buyers report resealed boxes, used units and missing batteries or chargers.
- It clusters on some listings. The one-battery GSB 183-Li listing draws more of these reports than the two-battery one.
- Buy from Amazon or an authorised seller. Then open the box on delivery.
- Photograph the contents. Do it before you throw away the packaging.
Frequently asked questions
What is the best cordless hammer drill in India?
Can cordless hammer drills handle concrete work?
Brushless vs brushed - which should I buy?
What battery capacity should I choose?
Why do some drills show 18V and others 20V MAX?
Which brand ecosystem should I invest in?
10mm vs 13mm chuck - which size do I need?
What is the difference between a cordless hammer drill and a cordless drill driver?
Is a hammer drill the same as an impact driver?
Will a 12V cordless hammer drill drill into a concrete wall?
Why do some of these drills cost ₹9,999 but arrive with no battery?
How much warranty do these actually carry in India?
Which is the best value cordless hammer drill in India right now?
Should I buy a corded drill instead of a cordless hammer drill?
Sources & References
- Drill Wikipedia Hammer drills use two cam plates to pulse the chuck forward as it spins, and drills built for screwdriving carry a clutch.
- Hammer drill Wikipedia The chuck and bit move forward and back thousands of times a minute, each blow small but together enough to break up concrete.
- Impact driver Wikipedia A powered impact driver delivers rotational blows, distinct from the longitudinal blow of a hammer drill.
- Brushless DC electric motor Wikipedia Brushed motors spark at the commutator and wear their brushes; brushless motors are more efficient and last until their bearings wear.
- Lithium-ion battery Wikipedia Cells are 3.6-3.7 V nominal and 4.2 V at full charge, which is why five cells are sold as both "18V" and "20V Max".
- About Silica and Worker Health NIOSH (US CDC) Drilling materials that contain crystalline silica creates respirable dust, which causes silicosis and raises lung-cancer risk.
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