Hi!!

Where I can find the cutter for make this design? Thank you!

It's a silicone onlay. Marvellous Molds have them:  https://marvelousmolds.com/shop/silicone-onlays/double-wedding-ring/

:)

Goood! Perfect thank you!!

I saw a cutter for this design at Hobby Lobby just yesterday.  It's a Wilton made out of pink plastic.  It didn't look very big so I'm sure there are better ones out there, but in a pinch...

Good! Thank you I will check that!