... of wheel:ESD,PU,rubber,nylon,artificial gum Braket finish:chrome,Zinc,Nickel capacity: 60-130kgtype:flat swivel caster w/brake or w ... /o brake, threaded stem swivel caster w/brake or w/o brake,flat fixed caster.Usages: used in the products which need ... used with the swivel casters with brake or without brake. fixed caster for cart,trolly,storage shelf