Hitec 37940S HS-7940TH High Speed Titanium Gear Digital Dual BB Servo Motor Type: Coreless Bearing Type: Dual Ball Bearing Speed (6.0V/7.4V): 0.07 / 0.06 Torque oz./in. (6.0V/7.4V): 181 / 222, Torque kg./cm. (6.0V/7.4V): 13.0 / 16.0 Size in Inches: 1.57 x 0.79 x 1.50, Size in Millimeters: 39.88 x 20.07 x 38.10, Weight oz.: 2.40, Weight g.: 68.04