The WORKS SS Brake Line Kit is not only the absolute best on the market, but is also designed to meet the Department of Transportation Motor Vehicle Standard MVSS-1006. Our performance lines increase safety and brake responsiveness due to no appreciable volumetric expansion in the brake lines. WORKS brake lines are made in the USA and consist of a Teflon tube with a protective coating. Then the stainless steel braiding reinforces the assembly and an outer sheath makes for additional protection. DOT certified because safety in your braking system should not be compromised.