GTS-2 specs:Torque(6.0V): 15.0 kg-cm / (208.3 oz/in)Torque(7.4V): 18.0 kg-cm / (250.0 oz/in)Torque(8.4V): 23.0 kg-cm / (319.4 oz/in)Speed: 0.080 sec (6.0V) │ 0.073 sec (7.4V)Speed: 0.065 sec (8.4V)Operating Voltage: 6.0 ~ 8.4 DC VoltsStall current :3.6AWeight: 47g (1.66 oz)Bearing Type: Ball Bearing x 2Motor Type: 4-pole Brushless MotorGear Type: Titanium + 7075Operating Temperature: -10℃~60℃Working frequency: 1520μs /50 – 1666hzSize: 41.0 x 20.0 x 23.6 mm ( 1.61 x 0.79 x 0.93 in)