This servo is a genuine OEM part from POWERSTAR Racing.
PowerStar PC-037 Specifications:
Torque(4.8V): 0.75 kg-cm/11 oz-in
Torque(6.0V): 0.85 kg-cm/ 12 oz-in
Speed: 0.08 sec (4.8V) │0.07sec(6.0V)
Operating Voltage：4.8 ~ 6V
Weight: 5g ( not including accessory)
Bearing Type：Plastic Bearing
Motor Type：Coreless
Gear Type：Plastic
Operating Temperature：-20℃~60℃
Working frequency：1520μs / 333hz
Size：20 x 8.2 x 17.3 mm
Includes:
1 x Power Star Waterproof Servo
1 x Hardware/Servo Horn Bag