Check the listing for details. 2 Pcs M18 x 1.5 Stainless Steel Internal Hex Head Socket Pipe Fitting (Silver). Condition: New. Listed at 13.96 USD. MULTIPURPOSE - Providing tight sealing for closing and terminating pipe ends in industrial, factory, outdoor gardens. Suitable for headers, ships, industrial pipes, and swimming pool water pipe ends, etc. WHAT YOU GET - The package comes with 2pcs pipe plug with seal ring that measure male thread size is M18 x 1.5mm, male thread length is 8.5mm / 0.33", inner hex diameter is 8mm / 0.31", total size is 17 x 23mm / 0.67 x 0.91"(D*H).RELIABLE MATERIAL - Constructed from 304 stainless steel, this product offers exceptional durability and corrosion resistance, making it suitable for long-term applications. Equipped with sealing rings, its precision engineering ensures high sealing performance, thereby providing reliable protection for your piping system.