1968-72 GM A body, GTO, 442, GS, Lemans, Skylark, Cutlass Rear Axle Brake Lines OEM Tin Coated Steel. These are the brake lines that run on the axle housing fro the rear drop down hose to the rear wheel cylinders. They deliver the brake fluid to the wheel cylinders. This is a factory exact inline tube reproduction with tin coated finish. If you are building a concours car this is a great detail item that is usually overlooked. They are always rusty. These are the details that separate the first place cars from the rest.