The Hitec HS-5065MG Digital Feather Metal Gear Servo features Hitec's digital, programmable circuit for incredible resolution, centering and holding torque; also featuring metal gears, a top-ball bearing, and at 31 oz./in. of torque with a quick transit time of 0.11 sec at 6 volts, it is no doubt the choice for high 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-5065MG Digital Feather Metal Gear Servo