For dependable sealing in compatible air and pipe applications, the TPHD Brass Square Head Plug provides a straightforward option for heavy-duty trucks. This aftermarket head pipe plug is made from brass and features a square head with a threaded seal. Available sizes include 1/8-inch, 3/8-inch, and 3/4-inch options, allowing you to select the plug that matches your specific application. Each brass square head plug is sold individually and includes a warranty against defects in workmanship and materials from the date of purchase. Listed as a universal heavy-duty truck part, this plug is categorized under air, electrical, and safety products and is ready to ship. The TPHD Brass Square Head Plug is a high-quality aftermarket replacement part and is not an OEM component.