Feature:1. Good Sealing Performance: Copper flat washers have good sealing performance, higher heat resistance than steel and rubber washers2. Resistant To Corrosion: Copper washers are resistant to corrosion in humid environments, have the characteristics of non magnetic, strong electrical conductivity, etc.3. For Fuel Injector Nozzle: Used for fuel injector nozzle gaskets, application scenarios such as generators, ships, automobiles, machinery and factories, etc.4. Enough Quantity: There are a total of 50pcs sealing washer in the kit, quantity is enough to meet your using needs5. Stable Structure: Copper sealing ring come with stable structure, excellent performance and long service lifeSpecification:Item Type: Copper Washer KitMaterial: CopperOuter Diameter: Approx. 15mm / 0.59inInner Diameter(spacing between 2 buckles): Approx. 7.3mm / 0.29inThickness: Approx. 3mm / 0.12inPurpose: Injector nozzle gasket.Package List:50 x Copper WasherNote:Match the corresponding size before use.