The holes have to line of perfectly or the item will not assemble. Even a 1/8 inch deviation is enough to make it impossible. Unfortunately these items are mass produced n China. As a buyer you have to be very fortunate to get one that was drilled perfectly. The allen wrench they provide is tiny as a dental floss.  After you repack all the styrofoam they send you and drop the tiny allen wrench for the 12th time you will ask yourself why you didn't just go to a flea market and find an assembled table.