Fender Jazzmaster / Jaguar tremolo, non-locking.
Mint.
Includes arm and mounting screws.

Original push-in arm-holder (not included) has been replaced with a screw-in collet and Pro arm. A set-screw underneath lets you set arm height and stopping point.

Used on Fender Classic 60s Lacquer and CME Player series.
Fits MIM, American, and should also fit Squier.