Sculpey molds are made of silicone, so no messy release agents are needed. Simply mold, flex, and release. This mold is great for beginners and first time Sculpey users. It works with polymer clays, air dry and non-dry modeling clays, plaster of Paris, craft soap, and candle wax! It is oven safe and easy to clean. Shapes include varying sizes of rectangular prisms, half circle prisms, cylinders, and more. Included are metal rods to suspend eye hooks while baking. Follow all baking directions on package before use. Details: 3D Jewelry design 1.5'' larges mold cavity Includes metal rods Oven safe, easy to clean Not food safe Silicone For ages 14 and up