Black - Rollerblade Style Office Chair Replacement Caster Wheels Universal Size for Most Office Chairs, Use on Carpet & Hardwood - Set of 5 SMOOTH RIDE  The 3 Rollerblade style wheels smoothen out the ride of your office chairs on all surfaces  works great on hardwood, tile and even carpet. All parts are made from high quality stainless steel to provide years of service and the smoothest maneuverability. EASY INSTALLATION  Our wheels fit most standard office chairs. Just pop off your old wheels and push on your new Rollerblade style wheels. Installs in less than 5 minutes! Not sure? We offer a 100% money back policy if you find that they dont fit your office chair. SCRATCH FREE  Our soft, polyurethane material will help to keep your expensive flooring from being scratched up. AFFORDABLE UPGRADE  This might be the best upgrade you can do for any office chair. Give your office chairs a stylish upgrade without breaking the bank! LIFETIME WARRANTY  We stand behind every castor we sell and back them with our money back guarantee! Break it or doesnt roll smooth, rest assured we will take care of it!