Tired of adding adapters to your brake system? This brake line fitting kit gives you all the correct fittings to flare onto your brake lines for most aftermarket 5 port brass and aluminum proportioning valves, Material Type: Steel, Finish: Plated, Size: (2) 3/8-24 for 3/16 in line, (1) 9/16-18 for 1/4 in. line, (1) 7/16-24 for 3/16 in line, (1) 1/2-2 for 3/16 in line, Notes: fits most aftermarket GM style proportioning valves.