BK Resources Equipment Caster Kit for Work Tables, Set of 4, 5" Polyurethane Wheel 5SBR-RA-PLY-PS4 Expanding stem caster great for stainless steel work tables with round legs Non-marking and highly resistant to chemicals and solvents Temperature range of -45 - 180 Weight capacity of 300 lbs per caster Set includes 4 locking casters