20V Brushless Cordless
Impact Wrench

1,500 N·m of nut-busting power. Stuck lug nuts, seized axle bolts, rusted trailer hardware — gone in seconds. No air compressor, no cords, no compromise.

1,500

N·m Breakaway Torque

Breaks Loose Anything

Rusted, overtightened, seized — handles what a breaker bar can't touch. The highest nut-busting power in its class.

60+

Min Runtime Per Charge

All-Day Battery

Brushless motor + 4.0Ah battery. Two packs included — one works while one charges. Never stop mid-job.

lbs Total Weight

Fits Where Others Can't

Compact enough for wheel wells, engine bays, and tight spaces under any vehicle — light enough to use all day.

1,500

N·m Breakaway

1,350

N·m Max Fastening

2,500

Max RPM

2,300

Max IPM

3-Mode Torque Control

Full Power When You Need It — Controlled When You Don't

Three selectable forward torque levels plus maximum-power reverse. Match the output to the fastener — never strip a small bolt, never under-power a big one.

Forward + Reverse

Three Forward Levels + Auto-Stop Reverse

Mode 1 — Low · Engine bay, trim & interior bolts 500 N·m

Mode 2 — Medium · Brakes, exhaust, bearing hardware 900 N·m

Mode 3 — High · Lug nuts, axle nuts, truck & trailer hardware 1,350 N·m

Reverse — Nut-Busting · Seized, rusted & overtightened fasteners 1,500 N·m

Auto-stop reverse: When the fastener breaks free and spins loose, the wrench automatically slows — bolts stay in the socket instead of flying out.

Speed & Impact Performance

2,500 RPM — Fast Enough for Any Job

Speed and impact rate work together to drive fasteners efficiently and break seated hardware loose faster. Both numbers are at the top of the 20V cordless class.

2,500

Max RPM

No-Load Speed

2,300

Max IPM

Impacts Per Minute

RPM determines how fast the socket spins when running a fastener in or out. IPM is how many hammer strikes per minute the mechanism delivers — higher IPM means the wrench seats and breaks loose fasteners faster with less effort from you. At 2,500 RPM and 2,300 IPM, four wheels come off and go back on in under 5 minutes.

Brushless Motor

Built to Last — Runs Cooler, Works Harder

Brushless motors outperform brushed ones in every way that matters for sustained, heavy impact work.

Runs Cooler Under Load

No brush-to-commutator friction. Consistent 1,500 N·m on your 20th lug nut, not just your first.

No Wear Parts

Brushes degrade and fail. Brushless motors have no consumable contacts — performance stays consistent over years of use.

More Runtime Per Charge

Less energy wasted as heat, more converted to torque. That is why this tool delivers 60–70 min from a 4.0Ah pack.

Compact for the Power

Smaller motor, same output. 4 lbs total — fits in engine bays and wheel wells where bulkier tools simply won't reach.

Battery System

4.0Ah Makita-Compatible — Use What You Already Own

4.0Ah Lithium-Ion

60–70 Minutes
Per Charge

Two 4.0Ah packs are included. One runs the tool while the other charges — no downtime, no waiting.

Makita-Compatible Interface

Works With Your
Existing Makita Batteries

Any Makita 18V / 20V battery slides right in. No adapter, no proprietary lock-in. The widest battery platform in the trades.

20V

Voltage

4.0Ah

Capacity

60–70m

Runtime

×2

Batteries Incl

20V vs 18V: Same cells, different label. 20V is peak voltage off the charger; 18V is operating voltage under load. Fully cross-compatible with all Makita-platform batteries.

Built For

Every Job — Road, Shop, or Field

Tire Changes & Lug Nuts

Four wheels done in under 5 minutes. Overtightened lug nuts on trucks and SUVs come off without a second thought.

Suspension & Axle Work

Axle nuts and strut bolts come off clean at 1,500 N·m. No breaker bar assist, no penetrating oil wait.

Trailer & Farm Equipment

Hardware left to corrosion for years — full 1,500 N·m reverse breaks it free when nothing else will.

Field Repairs — No Outlet Needed

No air compressor, no cord. 60–70 min of runtime covers most field service calls on a single charge.

Engine Bay Fasteners

Mode 1 (500 N·m) keeps you from stripping oil drain plugs, valve covers, and intake manifold bolts.

Fabrication & Shop Assembly

Fast forward torque for frame bolting and fixture work. Reverse for teardown and adjustments.

What's In the Box

Complete Kit — Ready to Work Immediately

Impact Wrench

20V brushless, 1/2 in drive, 4 lbs — with built-in LED work light.

2 × 4.0Ah Batteries

Makita-compatible 20V — 60–70 min each. One works while one charges.

Battery Charger

Works with your full Makita-platform battery range.

6-Piece Impact Socket Set

Impact-rated 1/2 in drive. Covers the most common automotive fastener sizes.

Built-In LED Work Light

Illuminates the fastener automatically — under vehicles, inside engine bays, wherever light doesn't reach.

User Manual

Mode guide, torque reference, battery care, and safety information.

Included Sockets — 1/2 in Drive

17mm

0.67 in

19mm

0.75 in

20mm

0.79 in

21mm

0.83 in

22mm

0.87 in

24mm

0.94 in

Safety: Always use impact-rated sockets. Standard chrome sockets can shatter under high torque. All 6 included sockets are impact-rated.

Automotive Impact Wrench

Arccaptain 20V Cordless Brushless Impact Wrench AR-IW100