Stainless steel overbraid with PVC coatingHydraulic line extension can be installed in minutes due to a manifold system that we designed, which allows us to bolt to the stock line with no need for a computer and hours of bleedingHydraulic line extension can be used as a brake line or hydraulic clutch line extension when installing taller handlebarsDesign incorporates a one-way valve speed bleederMade in the USABleeding process takes minutes to do and does not introduce any air into the lower clutch or brake lines:Open the bleeder valve by unscrewing itPlace a hose on the bleed valve to a catch containerPump the lever 8-12 strokes, close the bleed valve, and add fluid