HIGH-QUALITY SILICONE: Our molds are made of heavy silicone with bottom bracket, excellent elasticity, superior high tear strength, after squeezing and deforming, just rest for a few seconds and then will return to the state. WIDELY USED: The mold is used to create square and round coaster, beverage coaster, small flower pot base, conceret, plaster, cement and polymer clay etc, add dry flower, pearl pigment, mica powder, glow in the dark powder, glitter and sequins into the resin model to get a colorful model. EASY TO DE-MOLD: Smooth interior makes it easy to de-mold after it's fully cured. or you can use release spray or soap water which may help extend silicone mold's life. please do not use strong corrosive Material. Colour:white Material:Silica gel Size:11.5x1.65cm Package Contents: 1x square mold 1x heart-shaped mold 1x large hexagonal mold 1x round mold 1x medium hexagonal mold 1x small hexagonal mold Warm tips: 1. Make sure your casting molds are smooth and clean before use. 2. When you release the item out of the resin mold, please make sure your resin piece is completely cured or you will get a defective one. 3. When you de-mold, you can use a resin release spray and let it dry in the silicone mold, which may help extend your molds'life. If you don't have, you may use a baby wipe or a drop of soap water as a release agent, work it down to the silicone resin mold, then push the project from the bottom. 4. For cleaning: clean the epoxy resin molds with soap water or rubbing alcohol when necessary, then wipe dry with a soft cloth. 5. For storage: Keep the resin silicone mold away from direct sunlight,dust and fire. Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.