These round coaster molds are made from flexible, sturdy, and durable silicone, making them easy to release and clean with soap and water. The molds are constructed from pure silicone with excellent elasticity and high tear resistance. After being squeezed or deformed, they return to their original shape after a short rest. Even if you are new to resin casting, these molds are easy to use. The interior surfaces are smooth and shiny, minimizing the need for sanding or polishing finished resin pieces. Once fully cured, resin projects release easily from the mold. This resin casting mold is highly versatile. Ideal for use with epoxy resin coasters, small flower pot bases, concrete, plaster, cement, and polymer clay. Create unique handmade gifts for friends and family. This set includes round and square molds, suitable for various DIY craft projects. A perfect kit for both beginners and experienced crafters. The high-quality silicone material supports long-term and repeated use. Color: Transparent white Material: Silicone Package Contents: 6 x Round Mold (90x90x9.5 mm) 6 x Square Mold (90x90x9.5 mm) Only the above package content is included; other items are not part of the sale. Note: Lighting and display differences may cause slight variations between the image and actual color. Measurement may vary by +/- 1-3 cm.