Gear, Geared Parts, Transmission Parts manufacturer / supplier in China, offering 18t 8mm Hole 30mm Outer Diameter Spur Gear and 27mm Outer Diameter Spur Gear Group, 18t 8mm Hole Spur Gear 30mm Outer Diameter and 27mm Outer Diameter Combination Package, Custom - Designed Precision Involute Internal Gear for Robotics and so on.