This is a work metal that melts at 150℃. It is an alloy of tin (Sn) and bismuth (Bi), and does not contain lead. ・This is a set of the main body and molding powder. Instructions are not included. ・The product is 66g, but it weighed 64.3g on my scale. ・There are scratches on the surface and streaks that occurred during casting (product specifications). Please check the images.