Stainless Steel Brake-Line Tubing Kit offers superior corrosion resistance. 20′-long roll; 1/4″ O.D.; 0.028″-thick wall 14 fittings for SAE double-flare applications Corrosion-resistant, stainless steel tubing is just like the original found on most cars, so all you need is a tubing bender and flaring tool to create a dependable replacement brake line or a custom one.