Features: Low vibration levels 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: OUTPUT SHAFT TYPE: Smooth Output Shaft TORQUE AT MAX. POWER - IMPERIAL: 184.97 lbf.in TORQUE AT MAX. POWER - METRIC: 20.9 N.m STATIC TORQUE - IMPERIAL: 369.93 lbf.in STATIC TORQUE - METRIC: 41.8 N.m SPEED AT MAX. POWER: 105 RPM NO LOAD SPEED: 210 RPM AIR CONSUMPTION AT MAX. POWER: 14.8 CFM POWER: 240 W | 0.32 HP REVERSIBILITY: Reversible WEIGHT - IMPERIAL: 2.68 lb. WEIGHT - METRIC: 1.22 kg More Info: The Fiam MM25R/2E 20.9NM/210RPM Smooth Air Motor Output Shaft's innovative design insures reliable motor starting even at low air pressure. Does not overheat in difficult, heavy duty conditions, repetitive start/stops or repetitive reversing.