The package includes 2 aluminum gaskets with a diameter of 73mm (2.87in) and 2 aluminum gaskets with a diameter of 79mm (3.11in), plus 8 long valve discs. All components are precisely sized as shown in the figure. The air compressor gasket is made of high-quality aluminum, providing excellent resistance and sealing performance to help prevent gas leakage and support stable, efficient operation of the air compressor. These compressor parts are compatible with air compressor models 68740, 69667, 67501, and others. This broad compatibility helps reduce issues caused by incorrect fitment, allowing for easy installation and immediate use. The long valve discs are precision-polished using a specialized process to achieve an optimal balance of flexibility and strength. They maintain their shape under high-frequency opening and closing conditions, significantly extending service life. Designed for easy installation, each component has precise specifications that require no complex adjustments. Even users with limited experience can complete the installation quickly, saving time and maintenance costs. The aluminum valve disc forms a reliable seal with the valve seat, helping to minimize gas leakage and maintain consistent compressed air quality and pressure. Note: When installing the replacement, apply a small amount of grease to the lower valve before installation. Failure to do so may result in premature valve failure. Product Name: Air Compressor Gasket Weight: 30g Dimensions: Small aluminum gasket: 73mm / 2.87in Large aluminum gasket: 79mm / 3.11in Color: Silver Material: Aluminum Package Contents: 2 x 73mm aluminum gaskets 2 x 79mm aluminum gaskets 8 x long valve discs Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and monitor settings may cause slight variations in color between the image and the actual product. Measurement tolerance: +/- 1-3cm.