360 Degree Swivel Stem Caster. Threaded-post mount design, castors diameter 3 inch.Each swivel caster wheels loading 70KGS. Heavy enough and widely suit for carts, chairs, cabinet, flow rack, workbench, turnover rolley. With these creeper caster wheels replacement, energy saving and easy to move the table, seat, shelf or other heavy things. Smooth, quiet and non-marking polyurethane swivel caster wheels. With this castor wheels, you can flexibly move your scaffold, mechanics creeper to what you need to, and fix it easily and steadily.