Parts, which are subject to operational wear or wear due to other normal consumption as well as tool defects that result from wear, or from wear due to other normal consumption. Defects of the tool, which are attributed to ignorance of operating instructions, to applications not in accordance with the intended use, to abnormal environmental factors, to extraneous operating conditions, to overloading or to improperly performed maintenance or cleaning. Defects of the tool, which are caused by use of accessories or spare parts which are not Bosch original parts. Tools which have been modified or which have been provided with non-Bosch supplements such as grease etc. Minor variances of the quality which are insignificant concerning the value or the suitability of the tool.