I’m about to buy some McGizmo clips from our esteemed J.S. Burly …. for a wide array of my keychain tools attached to a standard split ring centerpiece.

I’m ashamed that I don’t know which sizes are the typical standards for such things.

Can y’all help me out here? I have about 20-25 tools that will make appearances on my keychain from time to time. So I’m looking for the most sensible and common millimeter size McGizmo clip to accomodate most of these items.

Thanks!