Mold Set, 6 x Diameter: 6.5cm DIY Mold, 6 x 5.5cm DIY Mold, 6 x 4.5cm DIY Mold.The shape of the bath bomb is made of high quality aluminum, will not bend, dent, rust or break.Aluminum cans are light, easy to handle and useAfter making the bath bomb, the molds are easy to wash and dry.Bath salt ball molds can be used not only for DIY bath bombs, but also for food molding: jelly, chocolate, cheese, mousse, pudding, etc.The Mold Set is a cool gift idea that can make any gift you want for your kids, friends, elders, affordable and creative, unique gift for adults and kids.