Air Motor, 2.5 hp HP, Running Torque @ Max. Pressure 78.75 in-lb, 68 cfm Max. Air Flow, No Load RPM 2,000 RPM, Shaft Dia. 5/8 in, Shaft Length 2.68 in, Hub and Foot Mounting, Port Size 1/2 in NPT, CCW Rotation, Housing Material Cast Iron, Gray Finish, 500 RPM RPM @ Max. Torque, Max. Air Pressure 80 psi, Keyway Length 1.34 in, Overall Length 7.97 in, Overall Width 3.94 in, Overall Height 4.19 in, 0 Degrees to 250 Degrees F Operating Temp. Range, Includes Muffler WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -