Step Drills HSS-XE Size 4-20mm Karnasch 201448U.
CBN Ground Step Drills from Karnasch (4mm cutting depth).
SPIRAL-FLUTED WITH SPLIT POINT HSS-XE steel HSS-XE steel Made of high-alloyed special steel XE for considerably longer service life than HSS-Steel.
Excellent for drilling in: Steel Cast iron Non ferrous material Plastics The CBN ground and spiral flutes guarantee smooth running and high cutting performance.
The chip flow is optimized and removed easily as with a twist drill.
