Ruiwaer 30PCS Office Chair Foot Duckbill Plastic Connectors Plastic Concave Washers 22x8mm Mechanical Fasteners for Fitness Equipment Bookshelves Reduce Loose Fasteners Black

["The product is made of high-quality plastic, offering excellent toughness and resistance to breakage, as well as corrosion and wear resistance, thereby extending its service life.","Product Dimensions: Outer Diameter: 22mm/0.87in, Inner Diameter: 8mm/0.31in, Thickness: 3.5mm/0.14in, Total Height: 10.4mm/0.41in","The product evenly distributes the load on bolts, screws, and nuts, offering excellent shock absorption and reducing noise during equipment operation.","Widely used in fitness equipment, tables, chairs, bookshelves, and other applications, this product prevents fasteners from loosening or falling out, ensuring equipment stability.","Package includes: 30 plastic concave washers"]