ITEM DESCRIPTIONTORQUE(4.8V): 18.0 KG-CM (250.0 OZ/IN) INCLUDES FREE ALUMINUM HORN Torque(6.0V): 23.0 kg-cm (319.4 oz/in) Speed: 0.14 sec (4.8V) │ 0.12 sec (6.0V) Operating Voltage：4.8 ~ 6.0 DC Volts Weight: 75 g (2.65 oz) Bearing Type：Ball Bearing x 2 Motor Type：Coreless Motor Gear Type：Titanium & Steel Operating Temperature：-20℃~60℃ Working frequence：1520μs / 333hz Size：40.7 x 20.5 x 38.5 mm ( 1.60 x 0.80 x 1.49 in)