Hitec RCD 31430S HS-430BH Deluxe High Voltage Ball Bearing Servo Speed (6.0V/7.4V): 0.16/0.14 Torque oz./in. (6.0V/7.4V): 57 oz.-in/69 oz.-in, Torque kg./cm. (6.0V/7.4V): 4.1 kg-cm/5.0 kg-cm Size in Inches: 1.59x0.77x1.44, Size in Millimeters: 40.6x19.8x36.6 Weight oz.: 1.60, Weight g.: 45.5