Nexel CA85RN (2) Swivel (2) Rigid Stem Casters, 8" Pneumatic, Set of (4), 1200 lb Capacity

Includes 4 donut bumpers to help protect doorways and walls. attaches to bottom of post. set of 4 casters. requires the use of a "tie bar" to assure rigid caster alignment. every two rigid casters require one tie bar. the bar size must match the width of the shelf.