Turnigy MG90S Metal Gear Servo 1.8kg / 13.4g / 0.10sec Voltage: 4.8 - 6.0v Torque: 1.8kg/cm @ 4.8V and 2.2kg/cm @6.0V Speed: 0.10 sec/60 degrees @ 4.8V and 0.08 sec/60 degrees @ 6.0V Weight: 13.4g Dimensions: 22.8 x 12.2 x 28.5mm