Features: Silicone Material: These circle coaster molds are made of silicone with shiny-surfaces, the finished products has a mirror effect. These resin casting molds are very flexible, easy to demold, reusable, easy to clean. Wide Range of Application: The resin coaster molds can be used to make resin coasters, resin bowl mats, trinket-tray, candle holder decorations etc. DIY Project: These silicone resin molds are compatible with 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. Ideal-Gift: Such a great gift for yourself or someone you care about. Using these silicone resin molds set to make personalized geode-agate piece for your family, friend for unique Christmas gifts. Specifications: Material:Silicone Type:1/2/3 Diameter: Approx.9cm/3.54" Width: Approx.1cm/0.39" Package Includes: 1/3Pieces Silicone Mold note: Please allow 1-2cm errors due to manual measurement,Please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.