Which kind of drill bit stays sharp the longest? Drill bits is often coated with metals to keep them sharper for a longer period, and titanium-coated bits have a tendency to stay the sharpest. The one thing I can come up with concerning why these brokers and agents detest wholesalers https://range-of-drill-bits04815.ziblogs.com/35011760/the-fact-about-wholesale-that-no-one-is-suggesting