A holder for 16 ER11 collets. Two versions available: 

• With labels for a full set of metric collets + two most popular imperial size collets
• With label placeholders so you can add your own labels

Print with 0.2mm layer, 15% infill, 3 walls.

If you like to emphasize labels, add pause at 21.4mm to switch filament to a contrast color, and at 22mm to switch to an original color.

Model Source (feel free to improve, or add your own labels): https://cad.onshape.com/documents/11e818ffa3c3bc8a00be23f8/w/28e9b2da8db45e558cd65f4c/e/c4d0912a0285b627be27a4dd