PET Material Clamshells for wax melts can withstand temperatures up to 150C. Our wax melt molds are made of PET, which is environmentally friendly, healthy, odorless, non-hazardous, and non-toxic. Robust and durable, designed with durability in mind. The wax melt clamshells are 6mm thick to enhance strength, are easy to separate, seal well, and resist leaks, ensuring the wax block maintains its shape and texture. This kit includes 30 pieces with 6 cavities each. The square molds feature heart-shaped cubes, providing ample molds for candle and soap making. Easy to use in four simple steps: 1) Prepare the material, 2) Pour the wax into the mold cavities, 3) Wait for it to set and solidify, 4) Remove once fully cooled and set. Wide application: Ideal for various crafting uses. Suitable for making candles, soaps, chocolates, candies, or small desserts. A thoughtful gift for family or friends who enjoy DIY projects.