GSR Professional machine tap M6, thread cutter for stainless steel DIN 371, HSSE-VAP metal drill, through hole core drill, shape B, reinforced shaft for metric threads : Amazon.de: DIY & Tools
STIER Maschinengewindebohrer M8 DIN 371 Form B 6H HSS-G Gewindeschneider rechtsschneidend Einschnittgewindebohrer Durchgangsloch : Amazon.de: Baumarkt