Dimensions(mm): 40.3 x 20.2 x 45.0mm Weight(g): 79.0 Speed(@4.8V sec/60): .20 Torque(@4.8V oz-in): 416.6 Speed(@6.0V sec/60): .16 Torque(@6.0V oz-in): 500.0 Gear: Unique Steel Bearing: 2BB Case: Full Aluminum 25 Tooth Spline