Allparts Tremol-no Pin Type Tremolo Lock - $50 (Onalaska)

Tremol-no pin type tremolo lock.
Use the single lock knob pressed against the shaft to allow your tremolo to dive only or tighten the other screws to lock it entirely.
I only used it briefly and left it locked most of the time.
I never noticed any issues with using the trem with this installed.
The issue ended up being with me.
I seldom used the tremolo and the extra bs associated with having it setup to do so wasn't at all worth it to me.
I've since gone back to decking the tremolo on my strat.