- Which is better for removing lug nuts on a pickup truck?
- The DCF961B. Its 1,900 ft-lbs breakaway torque (1,400 per the spec table) clears torqued truck lugs that the DCF891B's 800 ft-lbs may not. The DCF891B handles passenger cars fine.
- Is the DCF961B worth the extra $36?
- Only if you need the torque. At $196.25 at Amazon versus $160.39 for the DCF891B, the DCF961B also includes a 5Ah battery, which offsets much of the gap.
- Which is lighter to use all day?
- The DCF891B at under 4 lbs. The DCF961B weighs 6.4 lbs, so it tires your arm faster on overhead or repeated work.
- Do both use the same 20V MAX batteries?
- Yes. Both run on DeWalt 20V MAX lithium-ion packs. The DCF891B ships as a bare tool, so you need a battery and charger you already own.
- Which has more speed settings?
- Both have four. The DCF961B adds a Precision Wrench mode and a push-button mode switch; the DCF891B has a variable speed trigger and Precision Wrench control.
- Which lasts longer?
- Both use brushless motors. The DCF961B adds a shock-absorbing battery connection and Tool Connect chip-readiness, but it is heavier and works harder, so expect similar service life with normal use.