Soft Mold `Donuts` is for making shapes of three types of donuts and a cupcake. Use mold oil, Vaseline or baby lotion to grease the molds if you are using clay that tends to stick or has a stickier than usual texture. Recommend you to use another piece of clay to lift the molded clay out of the mold. The mold is made of polypropylene and it is bendable and flexible. It works well with clear resin and soft clay. Size: 108 mm W x 97 mm H x 25 mm D. Material: PP Heat-resistant temperature: 70 C., Cold temperature: -20 C.,