I bought these bits from storage for about half the price of new, they are described as very good. When I received them, I immediately noticed that the 5/8 bit was missing the leader pin, was slightly discolored, and felt noticeably less sharp than the other bits. I can only assume that the original buyer had the project, didn't use enough coolant and returned the bits. The 9/16 bit had "Project Metal" remnants, but it appeared to be in good condition, as did the rest of the set. I will keep…