This is the tool that works with the KeepBurning universal asslocks.
We found that this tool also works as a great cock and ball tool as well. The nice thickness of the silicone almost acts like a spring when the large rings is around your cock and balls and the smaller ring is around your nuttsack. The feeling is fucking amazing you can even use the loop as a nice bondage point. Available in two colors Fluorescent Yellow and Black.