This thing shouldn't work, it really shouldn't. But it does. When I got it, my stepdaughter and I took it out, looked at it, looked at my ancient and very very heavy fender twin, and made a bet that it wouldn't be able to hold it.
After a bit of messing around trying to set it up (the instructions are not terribly clear unfortunately) we got it in, pushed back the twin, and it held. It really held it.
This solves the age old problem of having the speakers pointing at your knees instead of your ears, and is much cheaper than other stands, doesn't decouple from the floor, isn't impossible to fit like old fender tilt back legs, and most importantly folds up into the back of your amp for storage, and ensuring you've always got it when you need it.
Great.