Alpen HSS cobalt jobber drills contain 5% cobalt alloy. Self-centering, they have a high heat-resistance for drilling steels with tensile strengths over 800 N/mm².
Particularly suitable for high alloyed steels, bearing-steels, hot/cold-rolled steel. Ideal for stainless steel.
Key Features:
High-Speed Cobalt
Up to 600-degree thermal stress tolerance
DIN338
Straight Shank

