2 Packs of Replacement Mute Wheels with Lock for PC Mobile Cart are designed to replace broken wheels and make a great upgrade to cart ONLY compatible with our mobile cart, please reach out to us if you have any inquiry Swivel mute wheels enable 360-degree rotation, allowing easy mobility in any direction so you can transport workstation smoothly and quietly Simply press down the brake to lock it, keeping wheel from rolling Overall Dimension(LxWxH) 2 15/16' x 2 3/16' x 3 1/4' (7.5 x 5.5 x 8.2 cm)