Drill bits all 5 sizes # 41, 21, 31, 13, and Letter D

The guides are easy to use. First select the appropriate guide for the rivet being drilled.
Use #41 drill bit and guide for 3/32 inch diameter rivets.

Use #31 drill bit and guide for 1/8 inch diameter rivets.

Use #21 drill bit and guide for 5/32 inch diameter rivets.

Use #13 drill bit and guide for 3/16 inch diameter rivets.

Use Letter “D” (.246) drill bit and guide for 1/4 inch diameter rivets.