Features 1、Contains 280pcs / 12 different sizes of the most commonly used copper washers 2、Made of top quality copper material, high melting point up to 1083℃ 3、High electrical conductivity and thermal conductivity, resistant to corrosion, good sealing effect, reliable to use 4、Equipped with a resealable plastic box, all washers are well placed in separated small grid-shape space, that makes more convenient to carry, select and collect 5、Widely application can be used for cylinder, valve, automobile, pump, bearing, sump plugs, water, fuel and hydraulic fittings Specifications: Features: Contains 280pcs / 12 different sizes of the most commonly used copper washers. Made of top quality copper material, high melting point up to 1083℃. High electrical conductivity and thermal conductivity, resistant to corrosion, good sealing effect, reliable to use. Equipped with a resealable plastic box, all washers are well placed in separated small grid-shape space, that makes more convenient to carry, select and collect. Widely application can be used for cylinder, valve, automobile, pump, bearing, sump plugs, water, fuel and hydraulic fittings. Specifications: Condition: 100% brand new Material: copper Color: gold Quantity: 280pcs Size: 12 sizes M5 x 9 x 1 30pcs M6 x 10 x 1 30pcs M6 x 12 x 1 20pcs M8 x 12 x 1 30pcs M10 x 14 x 1 30pcs M8 x 14 x 1 20pcs M12 x 16 x 1 25pcs M14 x 18 x 1 25pcs M12 x 18 x 1.5 20pcs M16 x 20 x 1.5 20pcs M16 x 22 x 1.5 15pcs M20 x 26 x 1.5 15pcs Box Size: 175 x 100 x 20mm / 6.9 x 3.9 x 0.8in Package Weight: approx.314g Application: electrical connections on household, commercial appliances, automotive and marine uses in which the power source has a threaded / bolt-type connection Package List: 280 x Assorted Copper Washers Package List