OTC's No. 4503 Double Flaring Kit is designed to make double or single flares in copper, aluminum, and brass tubing as well as soft steel brake line tubing. Chrome plated alloy steel swivel reduces friction and helps ensure a smooth, even flare. Comprehensive set includes five adapters - 3/16, 1/4, 5/16, 3/8, and 1/2 inch (4.8, 6.4, 7.9, 9.5, and 12.7 mm). Forged, heat-treated steel yoke ensures long term performance and durability. The rugged blow molded plastic storage case keeps tools contained and organized so they are ready when you need them. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.