The set includes end drums with connection squares 1/4 "and 1/2".
The heads are made of chromium-vanadium instrument steel, hardened to a hardness of not less than 39 HRC and protected against corrosion by a chrome-plated surface.
The inserts are made of tool steel S2, hardened to a hardness of 55-60 HRC and protected against corrosion by phosphating.
The tool is wear-resistant, suitable for long-term use at maximum loads.
