BEARING REPLACEMENT WHEELS FOR OFFICE CHAIR SET 5 pcs RUBBER, PROTECT THE FLOOR - the wheels are made of rubber, which means that the floor is not exposed to scratches , and the carpet remains intact. This also excludes the use of cumbersome pads that are not easy to keep clean and look unsightly after some time. BEARING AND QUIET - the wheels are quiet, additionally they do not slip , so when moving we are able to fully control the direction and intensity of movement. Moving on them is comfortable . UNIVERSAL - the set includes 5 wheels that will allow you to replace the entire five-star base for an office, gaming, swivel or children's chair . The set fits most of the armchairs available on the market with a 11mm stem diameter . EASY ASSEMBLY - by replacing the wheels, you give a new life to your chair! Push-and-click installation is quick and easy, just push the pin in . SPECIFICATION - material: rubber / metal; pin size: 11x22mm; wheel diameter: 7.5 cm; dimensions: 12 x 3.5 x 1.1 cm; maximum load per wheel: 50kg; set weight: 1.040 kg; weight in the package: 1.147 kg. SPECIFICATION material: rubber / metal pin size: 11 x 22mm diameter of the wheels: 7.5 cm dimensions: 12 x 3.5 x 1.1 cm maximum load per wheel: 50 kg set weight: 1,040 kg weight in the package: 1.147 kg INCLUDED 5 pieces of wheels Wheels designed for office, gaming, swivel or children's armchairs fit most domestic and foreign manufacturers. The use of rubber means that the floor is not exposed to scratches and the carpet remains intact. This also excludes the use of cumbersome pads that are not easy to keep clean and look unsightly after some time.