Standard DC Motor Copper Gear Servo Specifications - Torque(4.8V): 6.0 kg-cm (83.3 oz/in)/td> - Torque(6.0V): 7.0 kg-cm (97.2 oz/in) - Speed: 0.16 sec (4.8V) ~ 0.14 sec (6.0V) - Operating Voltage: 4.8 ~ 6.0 DC Volts - Weight 56.0 g (1.98 oz) - Bearing Type: Ball Bearing x 2 - Motor Type: DC Motor - Gear Type: Copper - Operating Temperature: -20 ~ 60 - Working frequency: 1520 s / 50hz - Size: 40.7 x 20.5 x 39.5 mm ( 1.60 x 0.81 x 1.56 in)