· Soft Flexible Silicone: Our round and square ashtray molds are made of high-quality silicone, which is flexible and durable for multi-time use.· Package includes 1 pc square ashtray mold and 1 pc round ashtray mold(Molds Only, Ashtray Not Included).· The Size of The Casting Mold: 9.8*9.8*3.2 cm (square mold), 11*11*2.8cm (round mold).· Easy to Use and Demold: Just pour the expoxy resin into each mold and wait until the resin is cured. Then twist the mold and the finished art ashtrays will come out very easily.· Great Gift Idea: Perfect DIY casting tools for ashtray making. Great gifts for kids and friends who loves making resin artworks.