Features 1、High quality red copper material with melting point up to 1083℃, super high temperature resistant. 2、Good electrical and thermal conductivity, high reliability and more convenient to use. 3、Suitable for sump plugs, water, fuel and hydraulic connections. widely applications. 4、10 Slot design of the box, each slot has washer with different sizes to meet your demands. 5、Included plastic box has multiple compartments to keep all parts organized and easy to carry. Specification Condition: 100% Brand New Item Type: Red Copper Washer Material: Red Copper Quantity: 200pcs (Inner Diameter x Outer Diameter x Thickness): M5 x 9 x 1 30pcs M6 x 10 x 1 30pcs M6 x 12 x 1 20pcs M8 x 12 x 1 20pcs M8 x 14 x 1 20pcs M10 x 14 x 1 20pcs M12 x 16 x 1 20pcs M12 x 18 x 1.5 20pcs M14 x 18 x 1 20pcs Package List 30 x M5 x 9 x 1 30 x M6 x 10 x 1 20 x M6 x 12 x 1 20 x M8 x 12 x 1 20 x M8 x 14 x 1 20 x M10 x 14 x 1 20 x M12 x 16 x 1 20 x M12 x 18 x 1.5 20 x M14 x 18 x 1