High Quality: All products are made of durable nylon, resistant to wear and corrosion Classified cleanly: flat drives of any size are pre-classified for easy identification and to avoid loss Each pack contains different sizes - we contain 500 pieces in the most popular and popular sizes: M2 * 5 * 1: 100 pieces, M2.5 * 5 * 1: 100 pieces, M3 * 6 * 1: 100 pieces, M4 * 8 * 1:50 pieces, M5 * 10 * 1:50 pieces, M6 * 12 * 1.2: 50 pieces, M8 * 16 * 1.4: 1:40 pieces, M10 * 20 * 2: 10 pieces < / li> With washers to increase the contact surface, reduce pressure and protect parts and screws. Perfect for electrical connections on household and commercial appliances, automotive and marine applications. Superior quality These black washers are made of high quality durable nylon that is resistant to wear, corrosion and well insulated. Wide range of uses, at home or at work. Perfect for electrical connection to household and commercial appliances, automotive and marine applications. Well classified