Experience unparalleled durability and performance with the RP 80-B Heavy Duty Insulator Rubber Washers by Metro Moulded Parts. Designed for precision, these washers are commonly known as bumper grommets, rubber spacers, cushioning washers, and protective discs. This 16-piece set features eight washers measuring 1-1/2" O.D. by 3/8" I.D., with varying thicknesses of 3/8" and 1/4", plus four washers at 1" O.D. by 1/4" I.D. thick. Born from 50 tons of pressure for exceptional detail, they boast smooth edges and flawless surfaces. The superior form of these rubber washers ensures sound insulation while reducing vibrations an essential feature for protecting equipment. Their grooved surfaces guarantee a steadfast grip, making them straightforward to install. Simply slide them into position, relying on their firm hold to keep everything secure. Infused with a sleek, black finish, these durable washers are the epitome of reliability and longevity. Trust your next project to RP 80-B, and purchase with confidence backed by Metro s platinum 30-year warranty. Your satisfaction is not just a promise; it s a guarantee!