Features: Quality longevity: These replacement wheels offer a combination of longevity and practicality. Designed to serve you well for long term use. Complete convenience: The package includes 8 rolling wheels, delivering comprehensive support for your mobility projects. With the standard screw diameter of 6mm, transition your furniture and equipment effortlessly, achieving smooth and efficient movement in any setting. Specifications: Material: nylon Color: black Size: 1 inch x M6 Package includes: 8 x Swivel caster wheels Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Please check specific size information before choosing our products