This roller is a very utilitarian tool and it is an essential tool you should have. If you make your own WHEAT FLOUR tortillas (tortillas of masa harina should be done with a press instead), this thing is a God Send. Here is why: The little roller is rounded/curved, so shaping circles and edges works really well with it, then you finish with the flat end, the wider roller.
While it isn't super sturdy, it seems adequate if you don't use the heck out of it. You will still want a full rolling pin for some things.
There are a lot of gadgets out there that don't end up getting a lot of use, but for certain things this item is ideal and can get a LOT of use. A definite buy!