Here are two different STL files for you. The first one is a regular simple tag, which is great for attaching to a key ring straight to the leather. The second one has an extra lip so you can fold it over to make a nice keychain with an embedded keychain. I ordered the clips on amazon that I folded under them, but you could use a regular key ring!
I have just got into leather working and these have been awesome!
The author marked this model as their own original creation.