Description Description: Includes 10 Aluminum Alloy Oil Drain Plug Washers. High Quality and Test Working Well before Shipping. Seals the drain plug against the oil pan, preventing oil leaking. Made to specific sizes and standards to ensure a proper fit. Direct replacement gaskets and some universal gaskets available. Proper fit with the drain plug ensures a tight seal. Specification: Material: Aluminum Alloy Inner diameter: 20mm/0.8 Inch Outer diameter: 25mm/1 Inch Package Includes: 10 Pieces Oil Drain Plug Gaskets Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Please understand due to the difference between different monitors, the picture may not reflect the actual color of the item.