Premium Universal 3 Inch Caster Wheel Replacements, Set of 5 Black Soft Rollerblade Style, Scratch Free for Hardwood & Carpet Floors, Heavy Duty Rubber, Universal Ring Stem (7/16&rdquo; x 7/8&rdquo;) FLOOR PROTECTION YOU CAN TRUST  Stop damaging your floors with those loud, clunky, plastic caster wheels. Our wheels are made from soft and smooth polyurethane to ensure that your floors endure no damage. Whether you have hard wood, laminate, tile, bamboo, linoleum or carpet, these wheels will work for you. UNIVERSAL FIT WITH EASY INSTALLATION  With a 7/16 x 7/8 (11mm x 22mm) Grip Ring Stem simply pull your old caster wheels out and pop these new durable and quieter casters in. HEAVY DUTY METAL CONSTRUCTION  Using precise manufacturing techniques, our engineers have created a high quality wheel built to last a lifetime, supporting 110lbs per wheel for a total of 550lbs per chair. UPGRADE! SEE AND FEEL THE DIFFERENCE  Exquisitely designed translucent performance wheels provide a luxurious look and feel while rolling silently and rotating 360 degrees. Maintain your focus and relaxed state while working in your office chair. These wheels are also perfect for home, garage, and shop applications. 100% MONEY BACK GUARANTEE  - Order with confidence! There is nothing to lose! We are eager to assist our customers and fix any problems quickly and with the customer's 100% satisfaction.