This is a set of 2.5" HDD mounts intended for use in my Homebrew Blade Server (http://www.thingiverse.com/thing:184301). All STL's are manifold and have been tested in Slicer. There is an assembled image in the sketch-up file for each combination so that you can see how the pieces go together. Along with the included pictures I hope it is fairly obvious how it works, but... drop me a line if anything needs clarification.