1.100% brand new2.Durable nylon, wear-resisting corrosion resistance.3.Excellent insulation performance, non-magnetic, heat-insulating, light weight, plastic gaskets of individual materials also have high temperature resistance, high strength and corrosion resistance.4.These flat washer provides a bearing surface 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 connectionWashers Fit For Sizes: M2, M2.5, M3, M4, M5, M6, M8,M10,M12Material:nyloncolour:blackPackage Contents:600 * Flat Washers With BoxOnly the above package content, other products are not included.Note: Light 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.