This is the Hitec HS-625MG Ultra-Speed Metal-Geared Universal Servo. The connector is universal, so it will work with JR, Hitec, Futaba, and current Airtronics radio systems. This servo has a speed of .15 sec/60 degrees at 6 volts, and a puts out 76 oz/in of torque at 6 volts. These are designed for use with helicopters, boats, as well as glow and electric cars.
Includes:One servo with pre-installed round (disk) servo hornFour grommetsFour brass eyeletsFour round, flanged, phillips head screws 1.5 x 14mmOne adjustable servo hornOne large X servo horn (43mm end to end)One small X servo horn (30mm end to end)One straight servo horn (33mm end to end)
Specifications:Speed: 0.18sec/60° at 4.8V and 0.15sec/60° at 6.0VTorque: 76.37 oz-in at 4.8V94.43 oz-in at 6.0VLength: 1.59"Width: 0.77"Height: 1.48"Weight: 2.11 oz