1.100% brand new 2. nylon, wear-resistant corrosion resistance. 3. Excellent insulation performance, non-magnetic, heat-insulating, lightweight, individual material plastic gaskets also high temperature resistance, high strength and corrosion resistance. 4.This flat washer provides support for load distribution of fasteners and abrasion resistance. 5.Perfect for electrical connections on household and commercial appliances, automotive applications and where the power source has a threaded/bolt type connection Washers fit sizes: M2, M2.5, M3, , M5, M6, M8, M10, M12 Material: nylon color: black Package Contents: 1800 x Flat Washers with Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.