40 Taper Mill Tool Holder

I made this so I would have a designated place to put my tool holder with a Haimer probe.  It was designed to hold a 40 NMTB holder but should hold CAT or BT 40 taper tools as well.  My coworker printed one using carbon fiber reenforced filament and has been using it for tightening and loosening ER 16 collets, but I wouldn't recommend that for general shop use.  It has 2 holes for #8 screws or 4mm screws.  I used 2" drywall screws because that is what I had laying around.