27/10/2026
Built for longer service life.
Manufactured from high alloy steel HSS-XE and enhanced with BLUE DUR coating, the Karnasch Professional Step Drill delivers high wear resistance and extended tool life, even when machining dry. Designed to drill perfectly round holes in sheet metals up to 4 mm thick, it also combines drilling and deburring in a single operation.
Learn more - https://karnasch.tools/en/all-products/drilling-tools/step-drills-tube-drills/hss-xe-durablue-coated-step-dr-201448/