Motor Type : 3 Pole Ferrite Bearing Type : Top Ball Bearing Torque 4.8/6.0v : 42 / 49 oz. 3.0 x 3.5 kg. Speed 4.8/6.0v : 0.16 / 0.14 second Size: 1.1"x 0.5"x 1.1" 29 x 13 x 30 mm Weight : 0.77 oz. 22 g.