The Hitec HS-65MG Mighty Feather Metal Gear Servo is a powerful micro servo for use with remote control planes, boats and helicopters. Considered one of the most powerful servos in the micro class, the HS-65 is offered with a choice of “shock resistant” Metal or “zero wear” Karbonite gears. The 65 series features a top-ball bearing for long life and positive centering, 31 ounces/inches of power at 6 volts and is an excellent choice for higher performance micro helicopters, electric park flyers, and 1/18 scale cars. About this ServoGears: Metal4.8v Torque: 1.8kg/cm4.8v Speed: 0.14sec/60deg6.0v Torque: 2.2kg/cm6.0v Speed: 0.11 sec/60degDimensions: 23.6 x 11.6 x 24mmWeight: 11.9g Manufacturer: Hitec Model: HS-65MG HS-65MG Mighty Feather Metal Servo