- Set includes 1/16" to 1/4" by 64ths drill bits
- Made from M35 steel with 5% cobalt, Century’s Cobalt drill bits are designed to cut through extremely hard metals, including stainless steel
- No center punch needed: Century 135-degree quick-cut points are self-centering and penetrate faster with less pressure…will not “walk" or “wander" at the starting surface
- Extremely heat resistant, must be used and operated in power units that have a RPM speed of 1,500 or more for maximum efficiency
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