Looks like a clamshell, but it's so much more! The Clammy 12-inch can be used to cut 12-inch clamshells, circles, half circles, quarter circles, and orange peel shapes. This is the 'new and improved' Clammy 12-inch which now includes registration marks right on the template for easy transfer to your shapes. Bonus: The Clammy 12-inch also has markings to cut Muffin Top shapes!