Standard DC Motor Copper Gear Servo Specifications - Torque(4.8V): 15.5 kg-cm (215.3 oz/in) - Torque(6.0V): 17.0 kg-cm (236.1 oz/in) - Speed: 0.16 sec (4.8V) │ 0.14 sec (6.0V) - Operating Voltage：4.8 ~ 6.0 DC Volts - Weight: 60.0 g (2.12 oz) - Bearing Type：Ball Bearing x 2 - Motor Type：DC Motor - Gear Type：Copper & Aluminum - Operating Temperature：-10℃~60℃ - Working frequency：1520μs / 50hz - Size：40.7 x 20.5 x 39.5 mm ( 1.60 x 0.81 x 1.56 in)