Drill bit spacer

I needed a guide to make straight holes with my drill and I wanted to have a spacer that would allow me to make holes with the correct depth. So I designed this simple spacer that in addition to ensuring the execution of a perfectly straight hole also allows you to manage the maximum stroke of the tip through a thread so as to make a hole with the right depth.You can adjust the height of the spacer from 35 to 50 mm.I added the stl files to print spacer for tips ranging from 3 mm to 12 mm in diameter.I hope it will be useful to you.