Air Motor 2.5 HP Running Torque @ Max Pressure 84 in.-lb. 70 cfm Max Air Flow Max RPM 2000 Shaft Dia 5/8 In. Shaft Length 2.68 In. Hub and Foot Mounting Port Size 1/2 in NPT CW Rotation Housing Material Cast Iron Gray Finish 500 RPM @ Max Torque Max Air Pressure 80 psi Keyway Length 1.56 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