Product Description The split (double-ended) AVTODELO wrenches are designed for repairing and servicing hydraulic and pneumatic systems of vehicles. They are made from chrome-vanadium steel using the hot stamping method at a reduced blank temperature. They have a split hexagonal working profile designed for working with threaded fasteners of the vehicle's braking system. The working profile of the wrenches is manufactured with increased precision. The wrenches are hardened to a hardness of 39-41 HRC. They are protected from corrosion by a matte chrome-nickel coating. A double-ended wrench should be part of every car owner's arsenal because it is no secret that the proper functioning of the braking system is one of the most important safety factors when operating a vehicle.