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Orig. Hartner
DIN 335
Type with 3 HELICAL VARIABLE PITCH cutting edges. For circular countersinking without vibrations. Significant reduction of feed forces. 90° HEAD TAPER - DIN 335. Cylindrical shank, without crossarms.
In SUPER-RAPID COBALT steel HSS-E. With TiALN coating. For high-strength steels, stainless steels and cast irons.