Bath Mold Sphere Diameter: approx. 45mm, 55mm, 65mm . Bath Moulds Material: Aluminium alloy, light material, uniform heating, fast heat transfer .Smooth Bath Moulds Set: The edges of the mold are finely polished, smooth edges, the hand feels comfortable .Bath Moulds Metal e Layer: The surface of the semi-circular mold adopts a matte layer, which is easy to take off, easy to clean, and resistant to wear .Package Included: 6pcs x 45mm sphere bath bomb mold, 6pcs x 55mm sphere bath bomb mold, 4pcs x 65mm sphere bath bomb mold .