This is the SH-1257MG Super Speed Metal Gear Mini Digital Servo. Features: The coreless motor and light weight design provides smoother, faster, and more efficient operation. The metal case design not only looks awesome but also allows for cooler and smoother operating temperatures. Metal gears form a solid framework for precise control and operation. Supports digital and analog control signalsIdeal for rudder on 450 level helis, CCPM on 500 level helis, and steering servo on 1/12th scale cars. Dimensions(mm): 35.0X15.0X29.2 Weight(g): 29.5 Speed(@4.8V sec/60): . 09 Torque(@4.8V oz-in): 26.4 Speed(@6.0V sec/60): . 07 Torque(@6.0V oz-in): 34.7 Gear: Metal Bearing: 2BB Case: Aluminum 25 Tooth Spline is compatible with Futaba servo horns Dimensions(mm): 35.0X15.0X29.2 Weight(g): 29.5 Speed(@4.8V sec/60): . 09 Torque(@4.8V oz-in): 26.4 Speed(@6.0V sec/60): . 07 Torque(@6.0V oz-in): 34.7 Gear: Metal Bearing: 2BB Case: Aluminum Running current (at no load): 100 mA @ 4.8V Running current (at no load): 120 mA @ 6.0V Stall current (at locked): 4000 mA @ 4.8V Stall current (at locked): 5000 mA @ 6.0V Idle current (at stopped): 5 mA @ 4.8V Idle current (at stopped): 5 mA @ 6.0V Limit angle: 200°±10° Connector wire gauge: ＃22 AWG Connector wire length: 250 ±5 mm Horn gear spline: 25T Control system: Pulse width modification Amplifier type: Digital Controller Operating Travel: 100° (when1000â†"2000 μsec) Neutral position: 1500 μsec Dead band width: 3 μsec Rotating direction: Counterclockwise (when1500â†"2000 μsec) Pulse width range: 800â†"2200 μsec Ma