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