Allow you make a skull-shape crafts.Made of graphite material, nice acid and alkali resistance, nice corrosion resistance, impact resistance, durable to use.Advantage: Great thermal conductivity, 89 MPA compression resistance, and 48.7 MPA flex resistance, can hold 2000 degrees Celsius.Usage: It can melt and cast metals like gold, silver, brass, aluminum, copper, zinc, plumbum, and more. Widely used as the ingot mould, test analysis, and other purpose.size:50x50x20mmMaterial:graphitecolour:BlackPackage Contents:1 * ingot moldOnly the above package content, other products are not included.Note: Light 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.