SwissTech: M6X1 HSS-EV Geen Ring Taps: Fluteless - ISO Metic Coase , TiN Coated PRO Series - Green Ring - Fluteless - ISO Metric Coarse, TiN Coated Manufactured to DIN 371/376. Fluteless - HSS-EV (TiN Coated) For through and blind holes. Ta…View more