This roller is designed to roll out very thin slabs due to having the ends tapered from the center. The roller will stretch the clay or dough from the center of the slab out to the edges to make thin slabs. Thus 2mm thickness is possible. These pins are made of selected kiln dr3eid solid hard maple, sanded, and finished by hand. When finished, clean, dry, and periodically coat with vegetable oil. Do not store in water, keep dry.