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 Metal Servo Arm Specification Torque: 21kg.cm @5V and 23.5kg.cm @6.8V Speed: 0.12S/60° @5V and 0.09S/60° @6.8V Operating Voltage: 4.8 ~ 6.8 Volts Dead brand: 3μs Weight: 75 g Motor Type: DC Motor Gears: Stainless Steel Working Frequencies: 50-333Hz Operating travel: 180° (PWM 500-2500μs) Size: 40 x 20 x 40.5 mm Teeth Count: 25T Waterproof - Yes