- High-quality swivel casters with M8x25mm brake, perfect for moving heavy furniture and appliances. - Made of steel and PVC/PU, they offer wear resistance, quiet operation, and do not leave marks on the floor. - Swivel head with double ball bearing for smooth and silent 360° movement. - Easy installation: simply twist and adjust the M8 thread, no additional tools required. - Each wheel includes a brake to securely keep furniture in place. - Suitable for all types of surfaces: grass, wood, tiles, carpets, and concrete. - The package contains 4 wheels with 50mm diameter and 72mm mounting height, supporting up to 210kg in total. - Ideal for home and business use, making it easy to move sofas, beds, cabinets, and tables.