There are 3 cutters shown in the main image, each of them is sold separately:
Small: H: 25 mm / 1 in - W: 32 mm / 1.25 in
Medium: H: 32 mm / 1.25 in - W: 32 mm / 1.25 in
Large: H: 40 mm / 1.6 in - W: 32 mm / 1.25 in
For the best result, the clay slab should be 3 mm thick.