This index is designed with gunsmiths in mind. It has holes for a taper tap and a plug tap in each of the sizes most commonly used by gunsmiths.

With this, you can piece together your own gunsmith tap set, using high quality HSS taps, and keep them organized.

It also has 2 slots in the back to hold a set of 3"x5" Starrett tap drill cards.

No supports needed.