Hitec HS-5645MG Digital Ultra Torque Metal Gear 2BB

This is a Hitec Super Torque, Metal Gear, that will work with             Futaba J, Hitec S, JR, and Airtronics-Z radio systems.FEATURES: EPA, Speed, Direction, and Fail-Safe Programmable (see COMMENTS).          MOSFET amplifier.          Gold plated contacts.          Three metal gears          Dual ball bearings.          Indirect drive long life potentiometer.          High standing torque.          Watertight and dustproof.          Includes blue aluminum, heat-treated servo arm (see COMMENTS).          Works with fixed wing aircraft and helicopters up to 40 pounds,            1/10th and 1/8th on- or off-road vehicles.INCLUDES: One digital high torque servo with 12" wire and S/JR/Air-Z connector          One white small X-shaped servo horn.          One red Large X-shaped servo horn.          One white adjustable servo horn.          One white offset straight servo horn.          One white disc servo horn.          One blue anodized, heat treated servo arm horn.          Four 2 x 14mm mounting screws          Four brass eyelets          Four black rubber vibration isolators.REQUIRES: Futaba J Hitec, JR, or Airtronics-Z radio systemSPECS:    Speed: 0.23 sec/60° at 4.8V          Speed: 0.18 sec/60° at 6.0V          Torque: 143.03 oz-in at 4.8V          Torque: 164.2 oz-in at 6V          Length:  1.59" (40.6mm)          Width:   0.77" (19.8mm)          Height:  1.48" (37.8mm)          Weight:  2.11oz (60g)COMMENTS: Programming the Fail-Safe:            In order to program the Fail-Safe on this servo. Modeler will need            to purchase the Hitec Field Programmer.          The metal servo horn will fit any Hitec servos that have a "+"            stamped on top of the output shaft.