K-Power MM-0900 Analog, High-Torque Metal Gear Servo, Waterproof, RC Car/Truck Specifications: speed @4. 8v: 0. 13 sec  speed @6. 0v: 0. 12 sec  torque @4. 8v: 133 oz/in  torque @6. 0v: 146 oz/in  dimensions: (lxwxh) 40x20x39mm  bearing: dual ball bearing  gears: metal  motor: analog  input voltage: 4. 8v-6. 0v  output shaft: 25t spline  wire harness length: 305mm (from case to end of plug).