This is the Hitec HS-635HB High Torque Standard Servo with the Futaba J, Hitec/JR/Z connector. This general purpose servo may be used in sport and high performance aircraft up to 12 pounds (5.4kg). FEATURES: Replaces the 605BB and offers improved centering and resolution Gears are constructed of Karbonite which is up to four times stronger than standard nylon gears Dual ball bearings Three-pole ferrite motor INCLUDES: One Hitec High Torque Standard Servo with Hitec/JR/Z type connector one 1.7" (44mm) diameter 4 point servo horn, one 1.8" (45mm) diameter round servo horn, one 2.3" (59mm) long 2 point servo horn, one 1.3" (32mm) 1 point servo horn, 4 rubber grommets, 4 eyelets, four 2mm x 15mm phillips head mounting screws REQUIRES: Installing in model and connecting to receiver SPECS: 4.8V 6V Torque: 69 oz-in (5.5 kg-cm) 83 oz-in (6 kg-cm) Speed: 0.18 0.15 Weight 1.83oz (52.1g) Length: 1.6" (40mm) Width: 0.8" (20mm) Height: 1.5" (39mm) COMMENTS: For replacement gear set, order HRCM5006 jxs 1/20/04 ir/jxs updt jxs 6/08/06