1. Approximate Size: 10x10 cm (4 Inch), Thickness: 1 cm. 2. These coaster moulds are crafted from natural wood. Natural wooden texture makes the coasters durable and lightweight protects your desk from stains or damage. Eco-friendly. 3. These wood resin art moulds fit all common-size including coffee mugs, wine glasses, mugs, etc. 4. Each wooden coaster moulds has a unique texture as shown in pictures, just fill them up with epoxy resin, add some glitters, then wait for it to cure, it will become an amazing resin DIY craft. 5. Use your imagination, make unique coaster works. You can customize your resin coasters with various ideas by adding beads, rhinestones, sequins, dried flowers, or any decorative objects you like.