These Vevor caster wheels are designed for smooth, quiet rolling in carts, furniture, workbenches, tool cabinets, and hand trucks. The set includes four 4-inch threaded stem swivel casters with dual locking A/B brakes for secure positioning. Dual ball bearings help provide stable movement, while the molded polyurethane wheels are made to roll gently across multiple floor types. Built with thickened carbon steel and an electroplated finish, these casters are designed for durability and rust resistance.