This is a Hitec Programmable Standard Digital Servo with Hitec "S" Type Connector. FEATURES: Four heavy duty Karbonite gears Top ball bearing Programmable Digital Designed for .20-.60 Airplanes, Steering & Throttle Servo, and Trucks and Boats INCLUDES: One servo with pre-installed round (disk) servo horn Four grommets Four brass eyelets Four round, flanged, phillips head screws 1.5 x 14mm One adjustable servo horn One large X servo horn 1.7" (43mm) end to end One small X servo horn 1.2" (30mm) end to end One straight servo horn 1.3" (33mm) end to end SPECS: Speed: 0.20sec/60 degrees at 4.8V Torque: 5.2 kg-cm (72 oz-in) at 4.8V Length: 39.8mm (1.57") Width: 19.8mm (0.78") Height: 38.0mm (1.49") Weight: 45g (1.59oz) COMMENTS: Replacement gears (Not Available) For replacement horns use HRCM6315 For replacement servo mounting hardware use HRCM6336 JiM 11.18.08 ir/jxs