Power HD WH-20KG WP HV Titanium Digital Servo 20.0KG/0.08sec@8.4V

Torque(6.0V): 15.0 kg-cm ( 208.3 oz/in)
Torque(7.4V): 18.0 kg-cm ( 250.0 oz/in)
Torque(8.4V): 20.0 kg-cm ( 277.7 oz/in)
Speed: 0.11 sec (6.0V)¦0.09 sec (7.4V)¦
Speed: 0.08 sec (8.4V)
Operating Voltage: 6.0 ~ 8.4 DC Volts
Weight: 82.0 g (2.89 oz)
Bearing Type: Ball Bearing x 2
Motor Type: Coreless Motor
Gear Type: Steel & Aluminum
Operating Temperature: -20~60°C
Working frequency: 1520µs / 333hz
Size: 40.7 x 20.5 x 38.5 mm ( 1.60 x 0.81 x 1.52 in)

Note: Waterproof