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 Specification 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