Gear, Spur Gear, Gear Shaft manufacturer / supplier in China, offering Customized CNC Machining Steel Brass Worm Gear Screw Shaft Helical Gear Worm Wheel, OEM ODM High-Precision Gear Gear Box Worm Motor Worm Shaft CNC Machining Gear, CNC Black Anodized Aluminum 5m 20 Tooth Hole 20 mm Synchronous with Idler Pulley Flange Synchronous Wheel Pulley and so on.