Does anyone know the difference betweek Twofish's Lockblocks and the lockblocks flashlight holder? Is the Lockblocks just a three pack of the flashlight holder? And it looks like their cyclopblock is a bigger version... how stable is that unit?

This is where I found the parts: http://www.twofish.biz/bike.html

Check out this thread, it might help: http://www.bikeforums.net/showthread.php?t=352142