Welcome to the wonderful world (Maze) of 6 inline tuners, just too many crazy choices aren't their, I'd say the best bet is to contact Stew-Mac, I'm sure they have had enough of the wrong size returned by now, to know which size will fit every model Fender makes. If you have a good selection of drill bits, you can size the hole with the shank of the bit, and give Stew-Mac that info too, Good Luck Doc........