Without comment on the merits of using these versus leaving your Alembic bass alone on the stand, placing it in the case, locking it in the car, or simply leaving it at home, these devices do fit a 4 string (or 5 if narrow) Alembic bass neck. While most of my Alembics and other basses are 1.5 - 1.78 nut width, I have two of these devices and they do fit them all. I bought them not to stop the bolt-cutter equipped thief, but simply the snatch and run kid. One can attach the loop end to the speaker cabinet, which will be a little heavier, at least in my case, than the guitar stand. The locking end can also be used to secure the guitar case (through its handle) to a large, heavy object, if desired.
 
While they may not be for everyone or every situation, they generally do what they are claimed to do. Not foolproof, but better than just leaving the bass on its stand or in an unsecured case.
Jon

Jon, exactly as what you wrote in your post above (238)  is what I was thinking !  It is that  snatch and run kid  !  
 
 Wolf

Let me know if you can find any.  
Can't open the Rocklock website any more.
Strings and beyond stating out of stock?
Out of buisness?  
Pete

Hi Pete , I will be checking for availability as well and when I find it I will let you know .  
 
 Wolf

I spoke with Chris, the owner, today. His parts supplier went out of business so he had to put things on hold. He hopes to relaunch within the next year or so, possibly with newer materials and a lower price point.

Thanks  for the update Jonathan ! Kool .
 
 Wolf

I wonder why they didn't plastic coat that cable? Maybe it would be too slippery to lock.

Thanks guys,
Now that I know that the Raven is on it, it will be found.
Peace,
Pete

The ones I have have the cable coated in red plastic with the junction points of the loops sleeved in a vinyl shrink-wrap type of cover. Very non-scratching for the guitar. The actual locking mechanism is coated in a material which is kind of rubbery, so the neck doesn't get scratched either.
Jon