TD-9420MG 20KG High Torque Metal Geared Waterproof Digital Servo 4.8v-8.4v

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. Fully waterproof underwater for 12 hours! Specification Torque: 18.5kg.cm @4.8V and 22kg.cm @8.4V Speed: 0.13S/60°  @4.8V and 0.11S/60° @8.4V Operating Voltage: 4.8 ~ 8.4 Volts Dead brand: 3μs     Weight: 80 g Motor Type: DC Motor Carbon Gears: Stainless Steel Working Frequencies: 50-333Hz Operating travel: 180° (PWM 500-2500μs) Size: 40 x 20 x 37.8 mm Teeth Count: 25T Waterproof - Yes