... diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic, phenolic and sandwich, etc. Our ... special sizes for different areas, such as Euro type, American type, and the popular type. Casters are more than 50 series, 1000 types ... know more about us!3.Similar Product4. Factory 65 American type hard rubber caster threaded stem top brake caster nylon pedal