Mountain 55632 1/2-in Cobalt Drill Bit
Features and Benefits: Made from premium grade cobalt steel 135 Split Point, starts cutting at the starting surface For use in extremely hard metals, including stainless steel No center punch needed Aerospace NAS907-J specifications Cobalt drill bits are designed to cut through extremely hard metals, including stainless steel. The Quick Cut Points are self-centering and penetrate faster with less pressure. It will not "walk" or "wander" at the starting surface. Extremely heat resistant, must be operated in power units that have a RPM speed of 1,500 or higher for maximum efficiency. Made in the USA.
Mountain 55632 1/2-in Cobalt Drill Bit Review
Best quality at best price of 40.06, you will not need any other hardware . Count on it!