I have two of these inits and just love them. Up when I need them, down and out of the way when I do not need them. It works for me!
This really isn't a bad shelf. The fact that the stored position and the in use position require it removed and replaced from the unit seems a bit antiquated in design, oh, alright, just downright poor. I is weird, but it does store almost flat if you wish, and with minimal effort can become a suitable shelf.
The side shelf added much needed work space to my rolling tool box after adding a top chest. Installation, if you could even call it that, is very easy while still providing good support for the shelf. I usually put around 20 pounds of "stuff" on my shelf with no issues.
My main complaint is that this is not fold down as described. An actual hinge would make this product much more useful
Easy to attach.
Requires 2 holes to fix the bottom support arms, but I did not need to secure it with them, so I did not drill into the nice heavy duty tool chest I just bought with this.
It is made of a heavy duty plastic material. Many ways to secure screw drivers and other tools on the side.
Folds easily and hangs to the side. You have to detach from the unit to fold down though.