Easy to use for cutting clay and similar materials, and combining shapes for quick layered sculptures. Clay cutters in many different shapes and sizes. Package includes 12 cutters in 1 theme. Size range: 7/8" x 1-1/2" to 1-5/8" x 1-7/8". Cutters are made of metal. For beginners to professionals. Warning: choking hazard-sharp parts. Not for children under 3 years.