Product description: The combined key AUTO DELO from the "Professional" series is used for working with fasteners during car repairs. Suitable for use in car workshops, auto service centers, and STOs, as well as at home. - Made of chrome-vanadium steel using the hot stamping method at a reduced initial temperature. - The working profiles of the key are made with increased precision and heat treated to a hardness of 39-41 HRC. - It has a standard profile of the open part of the key and an OVER DRIVE profile on the ring part. - The angle of inclination of the ring jaw is 15 degrees relative to the plane of the key, providing a more convenient installation. - Wear-resistant, suitable for long-term use under maximum loads. - Protected from corrosion by a matte chrome-nickel coating. Thanks to the OVER DRIVE profile on the ring part of the key, the repair time of the car is significantly reduced. The "Professional" series key is perfectly suited for working with undamaged fasteners, as well as with fasteners that have burrs, bites, and other damage.