Super strength servo ideal for applications requiring a standard size servo with high torque. Universal connector fits most RC receivers including Futaba and Hitec. Heavy duty standard size servo with that extra bit of power and speed. Includes aluminium 25T servo arm. Specification Modulation: Digital Torque: 21kg.cm @5V and 24.5kg.cm @6.8V Speed: 0.15S/60° @5V and 0.13S/60° @6.8V Operating Voltage: 5 ~ 6.8 Volts Dead band: 2μs Weight: 80 g Motor Type: DC Motor Gear Type: Aluminium and Copper Working Frequencies: 50-333Hz Size: 40 x 20 x 38.5 mm Teeth Count: 25T Waterproof: Yes