Be confident in your purchase, we're a Certified ASG dealer. How cool is that! Features: Low vibration levels Does not overheat in difficult, heavy duty conditions, repetitive start/stops or repetitive reversing MM, MN, MO air motor models are equipped with a silencing system that reduces the noise levels Highly effective due to compact size, high power output and low air consumption Designed using materials and processes that minimize the effects on the environment Drive shaft diameter: all drive shafts include a UNI 6604 Form A key slot 13 mm for MM Specs: MODEL NUMBER: MM13R/2E OUTPUT SHAFT TYPE: Smooth Output Shaft TORQUE AT MAX. POWER - IMPERIAL: 321.26 lbf.in TORQUE AT MAX. POWER - METRIC: 36.3 N.m STATIC TORQUE - IMPERIAL: 398.25 lbf.in STATIC TORQUE - METRIC: 45 N.m SPEED AT MAX. POWER: 60 RPM NO LOAD SPEED: 120 RPM AIR CONSUMPTION AT MAX. POWER: 14.8 CFM POWER: 240 W | 0.32 HP REVERSIBILITY:Reversible WEIGHT - IMPERIAL: 3.3 lb. WEIGHT - METRIC: 1.5 kg WARRANTY: 2 years The Fiam MM13R/2E 36.3NM/120RPM Smooth Air Motor Output Shaft features innovative design insures reliable motor starting even at low air pressure.