The Allstar Performance Adapter Fittings are crafted for precision and reliability, featuring a straight design that connects a 4 AN Male to a 3/8-24 in Inverted Flare Male. Made from durable steel and finished with zinc oxide, these fittings are perfect for brake caliper inlets and compatible with 3/16-inch hardline applications. Available as a pair, these fittings ensure secure and efficient performance in automotive systems, ensuring ease of installation and longevity.