360 Swivel Casters with 4 Brakes: The supporting casters contain 4 wheels, each with an individual brake for easy adjustment; 360 rotation allows for easy turning and moving forward in any direction. . When not in use, the heavy-duty casters activate the position brake while locking position and steering, allowing you to easily and safely control furniture handling and placement A variety of small or large projects can be used, including mobile furniture, dressers, refrigerators, air conditioners, tables, cribs, ottomans, coffee tables, plant stands and more. Diameter: 25 mm, maximum load 44 kg (single wheel: 11 kg), diameter 32 mm, maximum load 64 kg (single wheel: 16 kg), diameter 55 mm, maximum load 108 kg (single wheel: 27 kg). Quiet and durable transport caster set: Polyurethane (PU) rubber casters have both the elasticity of rubber wheels and the stability and durability of metal wheels, with thicker bottom, sturdy structure, strong wear resistance, quiet shock absorption and strong corrosion resistance, both indoors and outdoors. Casters can be widely used in homes, schools, garages, shops, vans and hospitals. Floor-friendly: The soft and durable rubber on the surface of the heavy-duty caster wheels with brake prevents annoying wheel marks on wooden floors and yours Carpets are additionally protected against wear and tear. The casters work on all floors: wooden floors, tiles, carpets, concrete roads, etc. Protect your furniture and floors by installing these new SPRIME heavy-duty casters to move heavy objects or equipment. Easy to Furniture Installing Wheels: Furniture casters are very easy to assemble, just screw the connecting plate to the furniture to install the casters. You will receive: 4 wheels with brakes, 20 screws, 1 screwdriver (9 cm)