This is a Metal Gear, Super Torque Servo with Futaba J, Hitec, JR and Airtronics Z Universal connector. FEATURES: Three metal gears Metal/plastic 1st gear Dual ball bearing Designed for R/C helicopters, boats, and glow or electric cars. 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 (43mm end to end) One small X servo horn (30mm end to end) One straight servo horn (33mm end to end) SPECS: Speed: 0.18sec/60° at 4.8V 0.15sec/60° at 6.0V Torque: 5.5 kg-cm (76.37 oz-in) at 4.8V 6.8 kg-cm (94.43 oz-in) at 6.0V Length: 40.6mm (1.59") Width: 19.8mm (0.77") Height: 37.8mm (1.48") Weight: 60g (2.11oz) COMMENTS: Web site: www.hitecrcd.com HRCM5302 replacement metal gear set HRCM5402 replacement case set HRCM6315 replacement servo horn set HRCM6336 replacement mounting hardware set tjt 12/19/2000 ir/jl updt jxs 2/13/06