Features: Premium silicone material,the resin coaster molds are made of silicone with glossy surface,the resin casting molds are very flexible, easy to demold, reusable, easy to clean. Wide range of application,the round shape coaster molds can be used to make agate coasters, cup mate, candle holder, home decor etc. for Creative diy project, the silicone resin molds are for most casting material such as epoxy resin, uv resin. you can add some resin pigment, resin dye to create personalized art craft projects in differnt ways. for Ideal gift,such a great gift for yourself or someone you care about. using these silicone resin molds to make personalized geode agate pieces for your family, friends for unique christmas gifts. Round/square/rectangle shape coaster molds,there are different shape sizes,optional,perfect size for making agate coasters,table ornaments. Specifications: Material:Silicone Tape:1,2,3,4 Package Includes: 1 Piece Coaster Resin Molds note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.