This is a genuine Fender American Ultra/Professional Jazzmaster/Jaguar Tremolo assembly with lock and bar (and aged white tip) from a 2024 Ultra model in mint condition. It's essentially an American Vintage tremolo with a screw-in bar insert instead of a pop-in one. Also note that the collet/arm insert features a special bottom screw and tension spring that is not present when you buy the American Professional arm retainer separately as a part. This feature is only available when the tremolo is part of the whole guitar which makes these special.

This is a great upgrade for any regular Mexican Jazzmaster or Jaguar tremolo assembly, especially the ones that don't have the lock. Mount screws also included!

Note that this is a stock pic but it is the same model, looks the same, etc.