R8 Collet & End Mill Drawer Organization

I needed to keep my collets and end mills from rolling around in my shallow drawers and came up with this design. 

The ends are left open so you can keep an endmill loaded (up to 22.2mm / 7/8") 

Link together with .25" rod, or print off the included pin. 
 

Files included for for singles and a couple groupings. 

Photos above of the blue and green printers are of a previous version with the endmill opening.