This is a drill bit holder and organizer that goes from 1/16 to 1/4 inch bits. It allows you to hold 4 of each size and enables you to compare qualities before choosing one. I recommend setting the scale to 105% in the slicer to ensure that the bits fit.
Learn more at:
[Multi-set drill index] (http://www.timberframe-tools.com/tools/multi-set-drill-index-with-guide/)

Published as well on Thingiverse.