Metal Gear MG945 12KG High Torque Speed Analog Servo for RC Car Boat Helicopter  Features: Perfect for small and medium-sized electric model aircraft and model Structural Material: Aluminum metal teeth High speed, stable and shock proof With the metal gear, you will have smooth movement and powerful torque when you need it Stall Torque: 10.5 kg/cm(4.8V), 13.0 …
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