Ingersoll Rand has combined their popular 231C 1/2" Impactool with accessories. This kit includes (1) 231 1/2" Impact Wrench (1) 3 Pc. Bit Holder and drive guide set for use with power drill/screw driver (1) 1/2" Drive 3 Pc. Flip Socket Set (3/4" x 13/16", 19mm x 21mm, 3" extension) 231C Details Maximum Torque 425 ft. - lb. Avg. Free Speed 8,000 rpm Weight 5. 8 lbs. (2. 63 kg) Length 7. 3" (185 mm) Avg. Air Consumption 4. 2 cfm Minimum load 22 cfm Sound (pressure/power) 102/115 dBA Inlet NPTF 1/4" Hose Size 3/8" (10 mm)