Countersunk Drill Index
thingiverse
This is an index for a set of countersink bits from Amazon. https://www.amazon.com/gp/product/B01H1D6FMA Might work for others too.
Download Model from thingiverse
With this file you will be able to print Countersunk Drill Index with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Countersunk Drill Index.