Office Chair Caster Wheels Replacement (All Black, Set of 5) - Heavy Duty & Safe for Protecting Hardwood Floors - Smooth Rollerblade Style Rubber Rollers - Universal for most Computer Desk Chairs ROLLS OVER THE COMPETITION- Over 2000 sets sold of the only all black luxury rollerblade office chair wheels, protects floors and glides across hardwood, carpet, mats, laminate, tile, slate, travertine, concrete, and small bumps without causing damage EXCELLENT FOR OFFICE CHAIRS- OfficeSkates wheels fit 95% of office chairs, they are custom rollerblade casters with a universal grip ring stem (7/16" diameter x 7/8 length) [11mm x 22mm], and are easy to install with no-tools required. Please compare your current wheels before purchasing. REAL METAL, REAL QUALITY- The first state of the art manufactured chair casters, OfficeSkates heavy duty rollerblade style office chair wheels supports 110lbs per wheel and 550lbs per office chair LUXURY IS SILENT- Designed with a 2.5" rollerblade chair wheel that provides an all black look with a thin clear layer that protects floors. OfficeSkates roll silently while fully rotating 360 degrees OUR PLEDGE TO YOU- The last pair of office chair wheels you'll ever need, comes with a 100% Money Back Guarantee! If you arent happy, neither are we! 2.5&#034; tall, that means they will add a little bit of extra height without over compensating. All black, a reinforced screw axis e-coated in jet black which increases longetivity and appeal Masterfully engineered, specially designed translucent casters with the thinnest scuff-free layer to make the wheel appear fully black while still protecting floors