This product is a 2-piece set of round aluminium alloy bath bomb molds used for DIY bath salt making. The molds are made of food-grade aluminium alloy, lightweight, and have a uniform heat transfer. The edge of the mold is finely polished, making it comfortable to hold and easy to clean. The mold surface has a matt coating, allowing for easy removal of the bath bomb and easy cleaning. The product can be used to make bath salts, cakes, candies, and candles. It comes in various patterns, including semicircle, sphere, starfish, daisy, heart-shaped, shell, and flower.