Power HD High-Torque Servo 1501MG
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 is one of our most popular standard-size servos. Servo horns and associated hardware are included.
Key specs at 6 V: 0.14 sec/60°, 240 oz-in (17 kg-cm), 60 g.
The HD-1501MG is a great high-quality, standard-size servo that features metal gears and two ball bearings and can deliver a tremendous amount of torque for a servo this fast. The lead is terminated with a standard “JR”-style connector, which is Futaba-compatible. The picture below shows an example of the hardware that might be included with this servo (actual hardware might vary).
You can find more information about this servo in its datasheet (380k pdf).
Note that, as with most hobby servos, stalling or back-driving this servo can strip its gears.
you can find all the specs at the Pololu website