Use this set of 24 plate casters on shopping carts, dollies, office chairs, plant stands, benches, bookshelves, storage units, and more. They can easily swivel and rotate 360 degrees on hardwood floors, laminate, tile, slate, and concrete. Individually the swivel wheels can hold over 66 pounds. Each black swivel plate caster attaches easily with a plate and 4 screws. Keep them handy as replacement caster wheels or completely replace your current set.