Hitec 37954S HS-7954SH High Voltage Ultra Torque Dual BB Servo Motor Type: Coreless Bearing Type: Dual Ball Bearing Speed (6.0V/7.4V): 0.15 / 0.12 Torque oz./in. (6.0V/7.4V): 333 / 403, Torque kg./cm. (6.0V/7.4V): 24.0 / 29.0 Size in Inches: 1.57 x 0.78 x 1.45, Size in Millimeters: 39.88 x 19.81 x 36.83, Weight oz.: 2.30, Weight g.: 65.20