The innovative new ultra-compact 10.8-volt Litheon Impactor Fastening Driver (PS40-2) is the worlds smallest and most lightweight impact driver. It delivers 60% more torque than an 18-volt drill/driver, but at 6-inches tall by 6-1/2-inches long and 2.2 lbs, it is less than half the size of an 18-volt NiCad impact driver. A high-performance Bosch motor and all-metal gears produce 1,800 RPM and 3,000 BPM and turn the powerful hammer and anvil system to deliver 800 in-lbs. of torque. For a full range of professional fastening applications, including self-tapping screws, nuts and bolts, lag bolts up to 5/16-inches and more, the PS40-2 is sized to fit in any tool belt pouch or pocket and be productive all day long.