This is the Savox SH-0257MG Super Speed Metal Gear Micro Digital Servo. Features: Over-spec refined design out performs ordinary micro size servo. The metal case design looks awesome and allows for cooler and smoother operating temps. Metal gears form a solid framework for precise control and operation. Strict production and quality control of plastic components. Savox servos are totally green Â- from materials to production, these servos are environmentally friendly. Ideal for CCPM and Rudder on 450 class heli"s and park flyer airplanes. Dimensions(mm): 22.8X12.0X25.4 Weight(g): 14.0 Speed(@4.8V sec/60): . 13 Torque(@4.8V oz-in): 25.0 Speed(@6.0V sec/60): . 09 Torque(@6.0V oz-in): 30.6 Gear: Metal Bearing: 1BB Case: Aluminum 21 Tooth Spline Dimensions(mm): 22.8X12.0X25.4 Weight(g): 14.0 Speed(@4.8V sec/60): . 13 Torque(@4.8V oz-in): 25.0 Speed(@6.0V sec/60): . 09 Torque(@6.0V oz-in): 30.6 Gear: Metal Bearing: 1BB Case: Aluminum Running current (at no load): 150 mA @ 4.8V Running current (at no load): 180 mA @ 6.0V Stall current (at locked): 1000 mA @ 4.8V Stall current (at locked): 1200 mA @ 6.0V Idle current (at stopped): 5 mA @ 4.8V Idle current (at stopped): 5 mA @ 6.0V Limit angle: 220°±10° Connector wire gauge: ＃26 AWG Connector wire length: 250 ±5 mm Horn gear spline: 21T Control system: Pulse width modification Amplifier type: Digital Controller Operating Travel: 90° (when1000â†"2000 μsec) Neutral position: 1500 μsec Dead band width: 5 μsec Rotating direction: Clockwise (when1500â†"2000 μsec) Pulse width range: 700â†"2300 μsec Maximum t