I made it myself, but I also sell them.
The one in the picture is for a my-Steel belt.
I also made them for some Neosteel belts.
It is a bit difficult if the belt has a small crossection because that hole is used to onsert the tag.

Hi from Germany

Next wheel should be about the year

And with that belt securely locked and sealed everyone knows that.

Watching this video, there is absolutely no doubt that this was necessary.