Ball and needle bearing construction for long life Lever throttle for positive speed control Ball detent socket retainer Rear exhaust Specifications: Free Speed (RPM): 230 Torque (ftl.bs.): 25 Square Drive (In.): 1/4 Air Inlet (NPT): 1/4 Air Consumption (CFM): 3 Length (In.): 8 Shipping Weight (Lbs.): 1-2/5