It's only one machine that wasn't finished, the other three are at least functioning tuners. In fact, all I really needed was the bushings for the tuning machines (and only one of those at that!), but I don't have a micrometer and didn't want to order the wrong size, plus the bushings were $8.95 while the tuning machines including bushings and screws were $10.95. It's not for replacing machines on either of the basses that I care about, this one is an old "biscayne" that I got for 20 bucks and pulled the frets, repainted and such. Not even sure it will play well yet as it's not finished so I didn't want to buy nice tuners for it.
I'm pretty amused that they sent something that looks almost right (I didn't notice til I opened the bag) but can't be used for its intended purpose. I guess I could drill it out if I can manage to keep a bit on that round surface, but I've already put one mis-matched tuner on it, not worried about it.