
These cobalt twist drills are made of a very hard steel used especially in high speed tools. They will drill through stainless, chrome-nickel, and other hard metals.
- It is highly recommended that you use water or coolant when working with these drill
- Ideal for platinum
- 12 Pieces
- Made in USA
Lasts up to 30 times longer than standard drills!
Sizes include:
53 – 1.50mm
55 – 1.30mm
58 – 1.05mm
59 – 1.04mm
60 – 1.02mm
61 – 1.00mm
63 – 0.95mm
64 – 0.90mm
65 – 0.89mm
66 – 0.84mm
67 – 0.81mm
68 – 0.79mm











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