Millenium ML1 Memory Lock 10,5mm

I use these for all my floor tom legs (Mapex Armory) and L - rods, tom mounts etc. They are practical (hinged, so you don't need to disassemble things to put them on) and solid, but not without its flaws. One of them out its inner thread torn out so the screw cannot be tightened anymore, which is something that should not happen, and it wasn't even used that much. However, You have to look on the price/quality ratio for products like this, especially if you're not a pro - I still saved a ton (a ton!) of money with those.

So, if you need a cheap, solid memory lock, this will do the trick, just always carry a spare ;-) (they are affordable, at least).