Feature:
The 1501MG is a metal-geared analog servo from Power HD that delivers extra-high torque normally associated with much more expensive or larger servos. This servo is a replacement for-and upgrade over-the original HD-2550A servo. Servo horns and associated hardware are included.

Specifications:
Output Gear: 25T
Torque(4.8V): 15.5 kg-cm (215.3 oz/in)
Torque(6.0V): 17.0 kg-cm (236.1 oz/in)
Speed: 0.16 sec (4.8V) ‚ 0.14 sec (6.0V)
Operating Voltageï¼4.8 ~ 6.0 DC Volts
Weight: 63.0 g (2.22 oz)
Bearing Typeï¼Ball Bearing x 2
Motor Typeï¼DC Motor
Gear Typeï¼Copper
Operating Temperatureï¼-20~60
Working frequenceï¼1520μs / 50hz
Sizeï¼40.7 x 20.5 x 39.5 mm ( 1.60 x 0.81 x 1.56 in)