These are the same brake lines we use in our performance and long-travel kits. They are extended in length, Teflon-lined, stainless steel braided and Kevlar reinforced with an additional protective covering. Our brake lines are made up of 5 layers for optimum strength and every single one is pressure tested. We know our brake lines are used in extreme conditions and are getting hit, pulled on, etc. off-road so we cut no corners. They come with everything you need to mount to the factory calipers. These are 24" in length. These are pressure tested to 4,500 psi and meet Federal D.O.T. MVSS-106 standards.