NOS genuine GHE Tenax cabriolet cover snap with a 10mm diameter head on the top button.
You are buying the ones in the middle row. The top row is Knopf and the bottom row is the larger head GHE.

I also have the GHE 15mm head button in a separate listing.

Price is for one.

Tenax is now being made by a different manufacturer so it will be difficult to find these GHE originals.