Description:    This is the Futaba S9353 High Voltage, High Torque, High Speed Servo Designed to be used with models requiring especially high torque and high speed Specs and Features: Speed: 0.07 sec/60 degree at 6.6V, 0.06 sec/60 degree at 7.4V Torque: 272 oz/in (19.6 kg/cm) at 6.6V, 305.6 oz/in (22.0 kg/cm) at 7.4V Size: 1.59 x 0.83 x 1.47" (40.5 x 21 x 37mm) Weight: 2.72oz (77g) Power Supply: DC 6.0 - 7.4V Horn Screw Size: 3x8mm COMMENTS: Must be used with 2.4GHz radio systems for full performance   Includes: Futaba S9353 Servo with 1.7" (43mm) 3-point Horn 3x8mm Servo Horn Screw, four Eyelets two Rubber Grommets and Instruction Sheet