I bought these locking nut caps to go nuts with my whammy bar on my Ibanez. I lost my original caps somewhere in time and after listening to some Vai I wanted to work the whammy bar again.
These caps by Harley Benton are made extremely well, they're quite heavy and they fit almost perfectly. Getting them in is easy but for some reason after you tighten the nut, they get stuck a bit... But hey! for this price you can't complain about a little issue like that.