4LIFETIMELINES Copper Nickel Brake Line Kit 3/16 inch and 1/4 inch,

Use for front brake lines, rear brake lines, transmission lines, fuel lines, and hydraulic applications. RUST-PROOF COPPER-NICKEL (CuNi) CONSTRUCTION – Unlike plain steel brake lines that corrode from the inside out, our 90/10 copper-nickel alloy resists rust and salt corrosion on both the interior and exterior surfaces.