... or fixed plate, stem, threaded stem, bolt holeRubber, hard rubber, elastic rubber, plastic, nylon, cast iron wheels are availableApplications: factory machinery ... Our wheel diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic, ... than 50 series, 1000 types for customers’ choices and wide different usage, such as, for industrial machine, medical facility ...