1.size:3-24inch 2.loading:1-15 ton 3.surface:injection and galvanize 4.types:fixed,swivel and with brake iron core polyurethane caster wheel, plastic core polyurethane caster wheel,polyurethane forklift wheel, polyurethane damping caster wheel ,skateboard PU wheel, active PU wheel (driver PU wheel), PU core turning wheels, polyurethane set brake wheel, polyurethane screw brake wheel, polyurethane ...