This is a replacement corner for wire cube storage systems like this one:http://www.amazon.com/Safco-Model-Wire-Cubes-Black/dp/B000789RSQ/ref=sr_1_2?ie=UTF8&qid=1319357764&sr=8-2It is slightly different from the normal design because of the limitations of printing. It is slightly more difficult to put together than the ones that come with a kit, but it holds stronger too and seems more resistant to breaking than the brittle material the normal corners are made of.Sorry for the poor photo, it's late and I got lazy and used a phone camera.Update: Sorry, forgot to upload STL file. It's there now.I was able to print this on a Mosaic with no additional support structures. The model itself has some supports built-in that will need to be snapped out with some pliers, but this is fairly easy.