General description High Quality Universal Rubber Office Chair Casters - This pack includes five office chair casters with a standard size of 11mm x 22mm, suitable for most office chairs, gaming chairs, and desk chairs. These casters are designed to glide smoothly and quietly on various floor types, including hard floors, parquet, carpet, and laminate, without the need for floor protection mats. Technical specifications Size: 11 mm x 22 mm Load Capacity: Up to 300 kg Material: Shock-absorbing polyurethane Rotation: 360 degrees Installation Tool-Free Installation - Simply remove the old chair wheels and slide the new casters into the slots until secure. Installation can be completed in approximately 5 minutes. To ensure a successful replacement, measure your chair casters in advance to confirm compatibility with the 11mm x 22mm size. Usage These office chair casters are ideal for gliding on various floor types without scratching or damaging them. Suitable for tile, parquet, laminate,