1. Quality from AMF There are very good reasons why a discriminating user should choose the best quality screwdriving tools: > rigorous quality control ensures uniform standards > seen as a whole, more economical, because the unproductive time spent while tools are issued is reduced to the essential minimum > in sizes up to ca. 6 A/F, the torque that can be applied by hand may be higher than the test torque that is specified in the relevant standard, with the resualt that: the wrench deforms, but only breaks under very unfavourable conditions, a modest, but valuable contribution is made to safety in the workplace; > the true value of quality tools can only be seen in real, practical use 2. Material Highly alloyed chrome-vnadium steel > tested steel sections in verifiably uniform quality from trusted suppliers ensure low wear for a long working-life. 3. Manufacture > end faces machined > end face up to 10 mm jaw opening chamfered process-sure > inspection by sampling at all stages of production 4. Execution Hardness to DIN standards > the values of minimum torque specified for tightening screws up to grade 12.9 are achieved or exceeded. 5. Surface finish > blued (Version C) > nickel-plated (Version D)