Professional Quality; Built for years of dependable service; High quality, heavy duty air tools made with pride!!; Impact action breaks loose stubborn fasteners; Spring-loaded quick release chuck; Three speed settings plus reverse; Paddle switch; Specifications:; Average Air Consumption: 6; Maximum Air Pressure (PSI): 90; Maximum Speed (RPM): 8000; Required CFM @ Operating PSI: 6 @ 90; Reversible, variable speed; Air Inlet Size: 1/4" - 18 NPT; 1/4" Drive Size; Recommended Hose Size: 3/8"; Includes Phillips Head Bit