The Napa Carlyle Tools 16mm-18mm Flare Nut Line Wrench in Polished Chrome is a high-quality hand tool designed for automotive use. With a lifetime warranty and a single piece construction, this wrench is built to last. The 6-point drive type ensures a secure grip on the flare nut, while the 18mm and 16mm size is perfect for most applications. The Carlyle brand is known for its durability and reliability, making this wrench a valuable addition to any toolbox.