Review on Lichamp 21-Piece Cobalt Stainless Steel Hardened Toolkit by Pressure Cook

later They seem solid and straight. What annoyed me the most about these drill bits is that they are all significantly smaller in diameter. Why can't Chinese manufacturers learn how to use calipers and tune their tools? They have some trouble turning because they may be the right size. Will not buy again due to this problem. I'm more comfortable with regular precision sized drill bits.