Thank you for viewing. These are new, unused original parts: washers for bolts and rods. The material is nylon, and there are 20 pieces per bag. They are made in Japan by a domestic manufacturer. Using these in conjunction with the brass washers also listed will help protect hoops from wear and prevent loosening. Please note that we do not recommend using this product on its own. They can be used for snare drums, as well as for toms and bass drums. We strive to sell at a fair price. Thank you for your consideration.