FEATURES: Hitec S, JR, Airtronics Z type connector. Very slim case and light-weight for mounting in small airplanes, electrics or gliders, where very high speed and good torque are critical. One of the slimmest micro servos available. High-strength resin gear train provides reliable operation. INCLUDES: One HS-55 Servo w/pre-installed small X-shaped servo horn and screw One very small straight servo horn One 1.7 x 3mm servo horn screw One small straight servo horn Two 1.7 x 7mm servo mounting screws at 4.8V SPECS: Speed: 0.17 Sec at 60 degrees Output Torque: 15.27 oz/in (1.1 kg/cm)