This product is a 4-pack of wire shelving pole caps designed for 1-inch diameter poles. Made of plastic in a matte black color, these pole caps feature a traditional style and adjustable functionality. They come with wheels for easy mobility and have a push-on mounting style for easy installation. Suitable for any room in the house, these wire shelving pole caps offer a storage solution that can be customized to fit your specific needs. Assembly is required, but no special care instructions are needed.