Shop for Power Tools at The Home Depot. The Dewalt DCF885B 20V MAX lithium ion 1/4-inch impact driver has a compact (5.55 inches from front to back), lightweight (2.8 pounds), design that fits into tight areas. It has three LED lights, with a 20 second delay after the trigger is released, that provide visibility without shadows. It has a one-handed loading 1/4-inch hex chuck that accepts 1-inch bit tips. This powerful little driver produces up to 3200 impacts per minute and has a max torque of 117 foot/pounds.