- Is the DCF921B powerful enough for lug nuts?
- Yes for most passenger cars and light trucks. With 450 ft-lbs of breakaway torque it handles typical lug nuts, but badly rusted or over-torqued bolts may still need a breaker bar.
- What is the difference between fastening and breakaway torque?
- Fastening torque (300 ft-lbs) is what it applies when tightening. Breakaway torque (450 ft-lbs) is the higher peak it can hit briefly to loosen a stuck fastener.
- Does the kit include a charger?
- No. The bundle is the DCF921B wrench and the DCB2104C 4Ah battery kit; a charger is not listed, so you need a DeWalt 20V MAX charger you already own.
- Will this work with my existing DeWalt 20V batteries?
- Yes. The DCF921B runs on any DeWalt 20V MAX battery, so older packs and larger XR packs work, though runtime varies with capacity.
- What sockets does it take?
- It has a 1/2 in. square anvil, so it uses standard 1/2 in. impact-rated sockets. Use impact sockets, not chrome hand sockets.
- How does it compare with DeWalt's high-torque 1/2 in. wrench?
- The DCF921B is smaller and lighter but gives up peak torque. DeWalt's full-size high-torque models loosen heavier, rusted fasteners more reliably at the cost of size and weight.
- Where is the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit cheapest?
- At eBay, for $75.99, 68% under what the other stores charge, as of our latest check.
- Where can I buy the DeWalt DCF921B ATOMIC 20V MAX 1/2 in. Impact Wrench W/ DCB2104C POWERPACK 4Ah Kit?
- 16 stores we checked sell it, including Authorized Tool Outlet, Amazon, eBay, Walmart, Max Tool.