Our four-pack of 5" polyurethane stem casters turns freestanding wire shelving into a mobile solution. With easy movement, you can shift your storage when cleaning or relocate items to different rooms without heavy lifting. Includes 4 casters, sold individually here Compatible with most 1" diameter posts Best for smooth surfaces Stems act as plugs and fit into posts' bottom Rotates 360 degrees for easy maneuvering Optional step-lock brakes to control movement Resistant to chemicals, grease, and oil Won't leave marks on floor 1,200 lb weight capacity per set of four For stability, not recommended for use with 8"d wire shelving Shipping: Next Business Day