The coating in titanium nitride (TIN) permits a considerable
reduction of the friction and, for this reason, a greater difficulty
of pasting of the material on the Hole Saw. The tool will acquire
more skin hardness and it will be resisting against wear and tear.
The coated Hole saw is advised to work abrasive materials (FIBERGLASS,
BAKELITE, REINFORCED PLASTIC) or hard working material (lNOX,ALUMINIUM).