Featuring the industry standard 25-tooth output spline with 3mm hex screw, and metal gears for maximum durability, Hitec's HS-648MG is the 25-tooth version of their powerful high-torque HS-645MG. It's the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Equipped with their unique M/P and metal gear train technology, the HS-648MG offers one of the strongest gear trains available in any servo.Features:High Torque Metal Gear Servo25 Tooth Output SplineRevolutionary Metal/Plastic First Gear (MP Gear)Cored Metal Brush MotorDual Ball Bearing Supported Output ShaftTop Selling High Torque Metal Gear ServoSpecifications:Operating Voltage Range: 3.5 ~ 6.8VVoltage: 4.8V / 6.0VNo Load Speed: 0.24sec/60deg / 0.20sec/60degStall Torque: 7.7kgf-cm (106.93 oz-in) / 9.6kgf-cm (133.32 oz-in)Peak Efficiency Torque: 1.5kgf-cm (20.8 oz-in) / 1.9kgf-cm (26.4 oz-in)Standing Current: 9mA / 9mANo Load Running Current: 350mA / 450mADeadband: 8us / 8usConnector Wire Length: 300mm (11.811 in.)Connector Wire Gauge: 24WAGDimensions: 40.6 x 19.8 x 37.8mm (1.598 x 0.780 x 1.488 in.)Weight: 55.2g (1.947oz)Motor Type: Cored Metal BrushBearing Type: 2 Ball BearingCase Material: Engineering PlasticGear Material: 1 Metal+Plastic & 3 Metal GearsHorn Gear Spline: 25T (6.0)IP-Rating: IP4XServo Amplifier Type: Analog Controller