Key blade is designed to keep your keys compact. Addition of a 4x32 mm brass bolt (#8 1 1/4 inch bolt in photo) with acorn or crown nut needs added to finish.
NOTE: My printing software allows me to easily rotate so often I don't pay too close of attention to the axis. This one may need to be rotated 180 for some systems and 90 on others for optimal printing with no supports.
1/25/15 - this was fairly popular so I added a 3 key version and a 5 key. the 5 key has two spacers that can be used should you want to use it with 3 or 4 keys. Later, I'll add those to the 10 key version as well.