Drill Guide With Differents Inserts

Made this simple tool to help me drill straight. I didnt like the box versions with multiple holes in tool so I made this.

Hold the tool in one hand and drill in other.

Pictures does not show second hand because I use it take the picture. 

Change the inserts to your pleasing:

2-13 short inserts

4-13 long inserts

Design by Maestro on MakerWorld (license: BY).