This is the HS-985MG Heavy Duty Metal-Geared, Coreless, Ball Bearing, Ultra-Torque Servo from Hitec. This servo is the new, updated version of the old HS-945MG servo. This version of the servo has a universal connector which will fit Airtronics, JR, Hitec and Futaba receivers (be careful with the polarity of the connector for Futaba radios).
The specs on this servo are:
- Transit time: 0.16 sec/ 60 deg. @ 4.8V (0.13 sec/deg @ 6V)
- Torque: 9.6kg/cm (133 oz/in) @ 4.8V (172 oz/in @ 6V)
- Weight: 62g (2.18 oz)
- Length: 40mm (1.57")
- Width: 20mm (0.78")
- Height: 37mm (1.45")