High-quality silicone, safety, high Flexible, full transparency, Super easy to de-mold. do not use strong glue, which will shorten the life of the coaster, and even lead to the failure to demould and damage the mold. Treat technological detail harshly, carefully select and tailor raw materials, stand the test of time. The design is made of high-quality materials.The design team has tried each material. The simple style looks full of design.Focus on design.Focus on design and quality to your experience. Weight: 150 (g) Shape: Irregular shape Type: Hairpin Mould Purpose: DIY crystal glue production Colour: transparent white Material: silicone Size: 7.8x9.7cm, 7.4x7cm Package Contents: 2 * Silicone mold Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.