... 75mm,100mm, 125mm3.Caster material: Thermoplastic rubber with precision ball bearing,pressed steel,zinc plated ... ,threaded stem and solid stem 6.Plastic,Hard rubber and Polyurethane is ravailable 7.Applications: supermarket, ... diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic, phenolic ... 65 American type thermoplastic rubber or pu caster wheels