Power HD R20S High Voltage Digital Servo 20KG 0.085sec @ 7.4V - PHDR20S

Specifications
Torque(6.0V):    17.0 kg-cm (236.1 oz/in)
Torque(7.4V):    20.0 kg-cm (277.7 oz/in)
Speed:    0.10 sec (6.0V)
0.085 sec (7.4V)
Operating Voltage:    6.0 ~ 8.4 DC Volts
Spline:    25T
Case Colour:    Black & Red
Case Material:    Aluminum Middle Case
Weight:    60.0g (2.12 oz)
Bearing Type:    Ball Bearing x 2
Motor Type:    Coreless Motor
Gear Type:    Titanium & Aluminum
Operating Temperature:    -20C ~ 60C
Working frequency:    1520 micro seconds / 333hz
Size:    40.7x20.5x38.5mm (1.60x0.80x1.51")