Sounds perfect!  ;)
Worked perfectly for intended use.  I sterilized by boiling for 15 minutes, carefully removed with tongs whose tips that had  boiled along with the sounds, and transferred them to a fresh sheet of aluminum foil  which I corrugated/pleated between each sound to keep them from rolling or touching.  I then wrapped that 'package' with a second sheet of foil and let them all cool before use.  The sounds are stamped with their French sizes, which helped me narrow down the choice of the diameters that I will purchase made in silicone.  Certainly recommend!
Rating: 5 stars