... .Wheel diameter: 75mm,100mm, 125mm3.Caster material: Hard rubber with delrin bearing,pressed steel,zinc plated,double ballrace swivel ... brake ,threaded stem and solid stem 6.Plastic,thermoplastic and Polyurethane is ravailable 7.Applications: supermarket, display racks, general ... Our wheel diameter is from 15mm to 300mm, materials include rubber, TPR, PU, plastic, nylon, cast iron, pneumatic, phenolic ...