I could not be happier with these wire cubes.
I used these for floor-to-ceiling shelving on two walls for my new craft room, and purchased fabric cubes to store my craft items.
They are sturdy, well built, and strong.
One suggestion--the toy mallet included with the kit is virtually useless.  Plan to buy a real mallet or use a hammer and wood block to make sure that the wires and the joins are completely locked together.
ALSO
Despite the item description, this does NOT come with "tipover restraint devices".  I used black heavy rubber shims under all front joins to make the shelves tip-proof.