Protect Floors: The 2" swivel casters are made of polyurethane, 4 Pack Furniture Casters: Each transport caster kit contains 4 casters, and each wheel has a brake. When you step on the brake, the wheel is locked, so you can move your furniture safely and easily. 360° Rotatable & Heavy Duty: The swivel plate allows 360-degree rotation, making it much easier to turn corners when moving furniture. Each caster has ball bearings. 50mm diameter casters can hold 160kg, 100mm diameter casters can hold 600kg. Save Energy: The heavy-duty casters help you save effort and time moving your heavy projects. Match different styles of furniture and walls. Easy to Install Moving Casters with Brakes: You can easily install the heavy duty casters. It is suitable for hardwood, laminate, tile, etc.