First one arrived broken. Replacement was OK but the design and materials make the mechanism that "props up" the bit holders likely to break if not handled gently (which tools should never have to be).
There's not really a place for the tweezers, and they just kind of hang out in the case. Seems like it was just a throw-in object. I don't know what that black square is in the picture (lint-free cloth?) but it wasn't included in the package.