OGG
Master of the Meh
This is the string lock assembly housing for my '87 MIJ Strat with the notorious System 1 Locking Trem unit.
They are unique to that set up, very close to an old Floyd, but not close enough to direct swap.
They are made of crap die cast pot metal, and have a tendency to bow upwards at the ends over time due to the high string tension. If you are EXTREMELY careful, you can bend them back into shape.
This only works a finite number of times before the above happens.
Replacements either don't exist, or are ludicrously expensive.
Which is why I bought a whole freaking bag of them for dirt cheap several years ago. I win bitches!
I still have a shit load of brand new extras.