Our mold shell is designed with buckles at the bottom and top, allowing you to easily build a second or more floors Our silicone mold mold shell is 1000% high-quality ABS plastic, which is and heat- compared to other mold shells made of silicone or PC plastic; not easy to deform or break, the is finely processed, not easy to stick, easy to disassemble No need for hot glue or tape, you can easily lock the buckles on the bottom and top of the parts, and you can easily build 2 layers or 3 layers to extend the height of the mold box according to your needs;providing you with more DIY possibilities, you can make silicone molds of sizes and heights, suitable for resin, candles, soap and clay, etc. Warm Tips: Hot glue is highly recommended to seal the bottom to avoid leakage 1. Do not use resin directly, the resin will stick to the plastic; 2. Do not use silicone pads as the bottom, because the silicone will stick to the silicone pad; 3. The mold shell kit only forms a box frame without a bottom; for the bottom, you can use the double-sided tape included in this kit to stick the mold frame to materials such as PVC board, ABS plastic board, acrylic board, etc. Once you run out of double-sided tape, you can still use materials such as seamless tape, watch the video guide and you will have more materials you can use instead. Colour:As Shown Material:Plastic Package Contents: 4x corners 8x center pieces 12x 0.98inch binder clips 10x adhesive backing films 1x double-sided tape Only the above package content, other products are not included. Note: Light reflection 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.