Our desk chair wheels replacement will NEVER scratch or damage your floors.Enjoy a carefree, safe glide across wood, hardwood, laminate, vinyl, tile and carpet floors all day long.Rest assured knowing that our computer chair wheels replace the wheels on almost any rolling chairMost customers say our wheels are better than the original onesDue to the screen display, and the shooting light is different, there may be a little color differencePlease allow 1-3cm error for manual measurement, thank youPackage Include:1xCasters