& Features: High conductivity, corrosion-resistant copper washer assortment, ideal for sump, water, fuel and hydraulic fittings. Made of 304 stainless steel. Sturdy and , excellent corrosion resistance for outdoor applications, easy to install. Flat gaskets are used to support and distribute the load over the outline area of the bolt and nut to prevent dragging. Ideal for household and commercial appliance electrical connections, automotive and marine applications where the power source has a threaded/bolted connection. Flat gaskets only, other accessories shown in the picture are not included! Specification:Material: Stainless SteelSizes: M2 M2.5 M3 M4 M5 M6 M8 M10 M12Color: As shown in the pictureQuantity: 580pcs/setNote: 1. Please allow 0-1cm error due to manual measurement. Pls make sure you do not mind before bidding.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:M2-100pcs, m2, 5-100 pcs, M3-100pcs, M4-100pcs, M5-60pcs, M6-40pcs, M8-50pcs, M10-20pcs, M12-10pcs (without retail package)