Cleco 31MFN903M rotary vane air motor. Maximum power=0.5 Hp, Stall torque=5.9 ftlb(8.0Nm). RPM at max Hp=925. Free speed=1850. Weight=2.7 lb. Gear ratio=10.8:1 OAL=6.06". Standard models are right hand rotation. Round housing with a 3/8" threaded spindle, side exhaust and non reversible. PN 31MFN903M