4 In. Gray Tpr Swivel Plate Caster With Locking Brake

4 in. Gray Thermoplastic Rubber Swivel Plate Caster, 300 lb capacity, locking, heavy-duty, smooth, and secure, Made in the USA. Commonly used on heavy utility carts, industrial shelving, and mobile workbenches that need to handle frequent repositioning under load. Well-suited for warehouses, maintenance areas, and backroom operations where equipment must move smoothly between stations and then stay firmly in place. Also ideal for large DIY or shop builds where strong, stable mobility is needed for transporting tools, parts, or materials across hard flooring.