Power HD R20s HV Coreless Digital Servo 25.0KG/0.08sec@8.4V

Torque(6.0V): 17.0 kg-cm (236.1 oz/in)
Torque(7.4V): 20.0 kg-cm (277.7 oz/in)
Torque(8.4V): 25.0 kg-cm (347.2 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: 67.0 g (2.36 oz)
Bearing Type: Ball Bearing x 2
Motor Type: Coreless Motor
Gear Type: Titanium & Steel
Operating Temperature: -20~60°C
Working frequency: 1520µs / 333hz
Size: 41.0 x 20.5 x 38.3 mm ( 1.61 x 0.81 x 1.51 in)