4 in

Black Polypropylene Swivel Plate Caster, 350 lb capacity, heavy-duty strength with smooth rotation, Made in the USA

Commonly used on heavy utility carts, mobile workbenches, and storage systems that need frequent movement across larger work areas

Well-suited for workshops, warehouses, and industrial-style environments where equipment is regularly repositioned between stations

Also i for DIY or commercial builds that require strong, dependable mobility with smooth handling under heavy use