Suitable for all floorsThe office chair casters are made of eco-friendly polyurethane and are safe to use on any floor iluding laminate, hardwood, carpet, tile, bamboo and vinyl planks without leaving scratches and marks on the floor. Size: 2 disassembly methods, lip , thread , caster diameter 2.5 Ih , wheel width 52mm, 360-degree rotating wheel. Maximum support 200KG Smooth and Quiet RollingThe casters use double ball bearings to make the chair roll smoothly and quietly. 360° free rotation, easy to change the direction of the chair. WIDE APPLICATION: You can apply these castor wheels on multiple furniture, such as cabinet,kitchen cart,kitchen island, sofa ,bookshelves,wardrobe and so on. The soft and solid surface of the wheel allows the castor to move smoothly on wooden floor, tiles,carpet,corete,grass etc. Polyurethane Material: Our castor wheels will never scratch, smudge or damage your floors. Enjoy a carefree, safe glide across wood, hardwood, laminate, vinyl, tile and carpet floors all day long.. Good for all Floors: Our ball castors don't damage your expensive hardwood floor, it could not leave a track on your floor.