Amazon.com : The Original Office Chair Caster Wheels Rollerblade Style (Set of 5), Safe for All Floors & Hardwood, Replacement for Desk Floor Mat, Universal Fit : Office Products
Set of 5 – 3” (75mm) Office Chair Rollerblade Wheels, Black/Black – CB690 | Slipstick Foot
Office Chairs Ruining Hardwood Floors? Consider the Rollerblade