Set of 5 Rollerblade Style Replacement Casters for Office Chairs Transparent Polyurethane Tires Over Black Nylon Skate Style Ribs Ball-Bearing Glides for Effortless Movement Non-Marring Surface Prevents Damage to Flooring Surfaces Universal 11mm Stem Design Fits Most Chairs No Tools are Required for Installation Cleans Easily with a damp cloth
