Product description The split (flare) AVTODELO keys are designed for the repair and maintenance of hydraulic and pneumatic systems of vehicles. - Made of chrome-vanadium steel by hot stamping at a reduced starting temperature. - Have a split hexagon working profile designed for working with threaded fasteners of the brake system pipes of a car. - The working profile of the keys is made with increased precision. - The keys are hardened to a hardness of 39-41 HRC. - Protected against corrosion by a matte chrome-nickel coating. A flare key should be in the arsenal of every car owner because it is no secret that the functionality of the brake system is one of the most important safety factors when driving a car.