Torque(6.0V): 17.0 kg-cm (236.1 oz/in) Torque(7.4V): 20.0 kg-cm (277.7 oz/in) Speed: 0.10 sec (6.0V) │ 0.085 sec (7.40V) Operating Voltage:6.0 ~ 8.4 DC Volts Weight: 60.0 g (2.12 oz) Bearing Type:Ball Bearing x 2 Motor Type:Coreless Motor Gear Type:Titanium & Alu Operating Temperature:-20℃~60℃ Working frequence:1520μs / 333hz Size:40.7 x 20.5 x 38.5 mm ( 1.60 x 0.80 x 1.51 in)