Rollerblade Style Office Chair Casters for Hard Floors, SET OF 5 Rollerblade Style Soft Wheel Office Chair Casters for Hard Floors (Package of 5) Allows you to roll and glide easily, quietly and effortlessly in your office chair while protecting your hard wood, tile, linoleum or pergo floors from scratching and scuffing Works as replacement rollerblade office chair wheels on most models of the following: Herman Miller Aeron, Global, Lane, Serta, Humanscale, Novimex, Realspace, Broyhill, Lazyboy Lazy Boy, Sealy, Globe, SC Turnstone, Vogel Peterson, Office Star chair and Suspa. Will fit almost all office chairs, especially those purchased from office super-stores like Staples, WalMart, Office Depot, Sam's Club and Costco. Will work on virtually any office chair with a metal stem on the caster of 7/16" wide x 7/8" long The larger diameter wheels allow these office chair casters to carry more weight. They roll smoother and will last longer