UNIVERSAL FIT REPLACEMENT WHEELS: Designed to fit all standard office & computer chairs. Effortlessly change your old casters in one, single motion and get ready to roll! KEEP YOUR FLOORS IMMACULATE: NO MATS needed, these casters safely glide on your expensive hardwood flooring, tile, vinyl, carpet & any type of floor with ease without making a scratch or noise (Not recommended for thick/tall carpets) GET OFFICE WHEELS WITH STYLE: Upgrade your home or office chairs and transform your decor by adding a Contact of cool luxury EXTREMELY : Made of superior grade steel & to safely support up to 650lbs. Polyurethane, style swivel wheels are designed to be super gentle with your precious flooring Colour: black Material: steel + PU Size: 75 x 95mm Package Contents: 5 x Wheels Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.