Made from durable, sturdy, non oxidizing food safe aluminum metal.Easy to use: It's very practical and convenient, also easy to clean up.Great for showing your cooking skill and your novelty ideas, you can make great fun with your friends or kids.Perfect gifts for your partners, friends or family members.A set can finish all jobs when crafting your own Fizzles of its a proven set with all tools on making DIY bath bombs. Please wash these molds with dish liquid before your first use! Multifunction: Not only of DIY bath bombs but also for mold food. Popular Gifts for your partners, friends or family members. colour: SilverMaterial: Aluminum Alloysize: 4.5 5.5 6.5cmPackage Contents: 1 * One set of 30 pcs semi-sphere mouldsOnly the above package content, other products are not included.Note: Light shooting 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.