Product information: the package comes with 10 pieces metal bath bomb molds in 5 different sizes, including 4 cm, 5 cm, 6 cm, 7 cm and 8 cm in diameter, 2 pieces per size, sufficient quantity and various sizes can meet your diverse DIY crafts making needs . Sturdy material: made of quality aluminum metal material, our bath bomb molds are sturdy and solid, not easy to break or deform, won't have a chemical reaction with citric acid, washable and reusable, can serve you for long time Please wash the mold with baking soda or washing up liquid before using it. . Practical uses: these crafting molds not only work as a bath bomb mold, but also can be a mold for you to make soaps, cakes, chocolates, desserts, and etc, practical tools in your daily crafts needs, bringing you handmade fun . Easy to release: due to the smooth surface of the molds, your finished bath bomb could be easily taken out from the molds without tearing as well as maintaining its shape, convenient for both DIY beginners and skilled people to operate . Gift supplies: these metal bath bomb crafting molds are ideal gifts to your mom, neighbors, friends, colleagues and who love dessert or food making, or you can make the bath bomb with the mold and take finished crafts as gifts for your family members, enhancing your relationships .