Review on High-Quality 9Mm M35 Cobalt Drill Bit For Cutting Hard Metals - Straight Shank, Extremely Heat Resistant, And 5% Cobalt M35 Grade HSS-CO by Marco Carpenter
Drill bit works OK but be careful
While the drill bit appears to be very durable, it comes sharpened with a very shallow angle. This makes is a challenge to get started in steel and to get a clean hole and exit. I would prefer a steeper angle with a bit more "bite". Also, the price was a bit high for a single drill bit - prior purchase of a pair of similar bits was same price but for 2.
- As advertised
- May not be suitable for softer materials such as wood or plastic
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