Kemper Clay Pattern Cutters -5 Pc Square Set by Kemper Kemper Klay Kutters Square Set of 5 Kutters. Klay Kutters are just like cookie cutters with a pusher-outer in the middle. Made of Rust-Free Brass with spring-returned plunger. Use them with any type of clay, bread dough, modeling paste, soft wax, paint, sugar paste & more! 5 sizes include 1 each of 3/4 inch, 5/8 inch, 1/2 inch, 7/16 inch, and 3/8 inch.