Just doing my part to make the tools needed to build a MakerBot printable.

The wrench is a 1cm metric-- you can use a pair of calipers and Blender to drag the jaws of the model to any size you like, though! The wrench has been rotated exactly 45 degrees so it'll fit in the build area-- you'd be well served to reverse that operation before dragging verts around.

The hex key is 2mm thick-- you should be able to scale it to any size you need, although you may have to shorten the handle to make it fit in the build area at larger diameters...