1.100% new 2. nylon, wear-resisting resistance. 3.Excellent insulation performance, non-magnetic, heat-insulating, light weight, plastic gaskets of individual materials also have high temperature resistance, high strength and resistance. 4.These flat washer provides a bearing for fastener load distribution and resistance to abrasion. 5.Perfect for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection Washers Fit For Sizes: M2, M2.5, M3, , M5, M6, M8,M10,M12 Material:nylon colour:black<br><br>Package Contents: 600 * 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.