... several series: light caster series, medium size caster series, heavy-duty caster series, super-heavy caster series, single caster series( ... can process products according to your request. Light series caster wheelSize: 2inch-6inchType: screw caster-activity ... nylon, polyurethane and so on.Characteristics: Wear-resisting, small noise, corrosion resistance, flexible rotation, track accurate, ...