Dimensions(mm): 40.3 x 20.2 x 38.5 Weight(g): 69.0 Speed(@6.0V sec/60): .12 Torque(@6.0V oz-in): 319.4 Speed(@7.4V sec/60): .095 Torque(@7.4V oz-in): 388.8 Gear: Unique Steel Bearing: 2BB Case: Full Aluminum 25 Tooth Spline