This two-part Rio Cold Mold™ silicone molding compound lets you mix up a small amount of compound quickly and easily with no measuring or guesswork. The compound is compact and portable; you can carry it with you wherever you go, and capture a unique pattern or texture in minutes. It's ideal for molding delicate originals, master models and for use with metal clay. Rio Cold Mold™ compound delivers 0% shrinkage without heat. To use, combine equal amounts of each part, and mix thoroughly; no release agent is needed. Sold as a pack of six 1-oz. portions.