Specifications:Material: Top Quality CopperClamp Range: 5-18mm (1.9 - 7inch)Package Quantity: 300-Piececolor:picture colorFeatures:High conductivity, Use in electrical applications to assure maximum conductivity, Perfect for ElectricalConnections on Household and Commercial Appliances, Automotive and Marine Uses in Whichthe Source Has a Threaded / -type Connection1.2.Top Quality Copper - High Conductivity, Corrosion Resistant3.solid copper sump plug washer set.4.perfect for sump plugs, water, fuel and hydraulic fittings.5.Suit all types of engines: Car, Marine, Generators, Machinery and Plant.Package Included:35pcs * copper gasket 5 * 9 * 130pcs * copper gasket 6 * 10 * 130pcs * copper gasket 6 * 12 * 130pcs * copper gasket 8 * 13 * 130pcs * copper gasket 10 * 14 * 125pcs * copper gasket 8 * 14 * 125pcs * copper gasket 12 * 16 * 125pcs * copper gasket 14 * 18 * 120pcs * copper gasket 12 * 18 * 1.520pcs * copper gasket 16 * 20 * 1.515pcs * copper gasket 16 * 22 * 1.515pcs * copper gasket 20 * 26 * 1.5Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.