Hitec HS-5485HB Standard Karbonite Gear Digital Top BB Servo Motor Type: 3 Pole Bearing Type: Top Ball Bearing Speed (4.8V/6.0V): 0.20 / 0.17 Torque oz./in. (4.8V/6.0V): 72 / 89, Torque kg./cm. (4.8V/6.0V): 5.2 / 6.4 Size in Inches: 1.57 x 0.78 x 1.49, Size in Millimeters: 39.88 x 19.81 x 37.85, Weight ounces: 1.59, Weight grams: 45.08