1968-72 GM A body, Elcamino, 70-72 Rear Conversion Axle Brake Lines OEM Tin Coated Steel. These are for cars that have been converted to rear disc brakes - they have been shortened and have the bends on the ends to accept the rubber caliper brake hose and are supported by a bolt or weld on tab to the axle. They are very similar to the factory lines except shorter. they both 10 & 12 bolt and all rear disc conversions. These are the brake lines that run on the axle housing fro the rear drop down hose to the rear hose that replaces the 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.