LTC MG996R Torque Digital All Metal Gear Servo for Helicopter Car Boat Model FE Operating speed: 0. 17sec / 60 degrees (4. 8v no load). Stable and shock proof, metal gear, connector wire length 300mm. Great for truck, boat, racing car, helicopter and airplane. Compliant with most standard receiver connector: futaba, hitec, sanwa, gws etc. . . Power supply: through external adapter. Stable and shock proof. Coreless motor , metal gear .