12/24 Volt DC Driver Motor for Robot, Volume Gate Garage Door, Milling Machine, Home Projects, Manufacturing Industry and So On Precision casting, exquisite output shaft, low noise, more comfortable to use; The gears are heat-treated after grinding, with wear resistance, long life, low noise; The positive and negative wiring use high quality PP anti-electric waterproof, wear resistance is not easy break; The Gears made of copper alloy, have advantages of good wear resistance, corrosion resistance, smoothly transmission and higher torque transmission.