LF-20MG Torque(4.8V): 16.5 kg-cm (229.1 oz/in) Torque(6.0V): 20.0 kg-cm (277.7 oz/in) Speed: 0.18 sec (4.8V) │ 0.16 sec (6.6V) Operating Voltage：4.8 ~ 6.6 DC Volts Weight: 60 g (2.12 oz) Bearing Type：Ball Bearing x 2 Motor Type：DC Motor Gear Type：Copper & Aluminum Operating Temperature：-20℃~60℃ Working frequence：1520μs / 333hz Size：40.7 x 20.5 x 39.5 mm ( 1.60 x 0.80 x 1.55 in)