Alpen Cobalt Drill Bits

• 5% cobalt alloyed jobber drills with a high heat resistance
• For drilling steel with tensile strength over 800 N/mm2
• Especially suitable for high alloyed steels, bearing-steels, and hot/cold rolled steels
• Ideal for stainless steel
• Highly accurate centering
• Break-resistant
• Industrial quality

Diameter: 3.4mm
Working length: 39mm
Overall length: 70mm