DescriptionThese sealing washers and gaskets are made of copper material, solid and durable. They have good electrical conductivity and thermal conductivity. High conductivity, corrosion resistant copper washer assortment, great for sump plugs, water, fuel and hydraulic fittings. Perfect for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.Features- Color: As shown. - Material: Red copper. - Size: 13.2 x 6.8cm (LxW). - quality copper material, melting point up to 1083. - Good electrical conductivity and thermal conductivity. - 200pcs solid copper sump plug washer set. - All contained in a compact and see through compartmented plastic case. - Great for sump plugs, water, fuel and hydraulic fittings. - A sump plug washer set to suit all types of engines be it Car, Marine, Generators, Machinery and Plant.Note: Please allow 1-2mm errors due to manual measurement. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same