[High Quality] : These melting casting are mainly made of graphite, the ash content of the 1 kg crucible mould is less than 0.1 percent, the metal purity will not be affected during the metal refining process. Fast cold and hot conditions, with good thermal stability, exquisite refining effect. [Product Advantages]:Exquisite craftsmanship and versatile usages, these graphite casting are featured with nice thermal stability, fast cooling, greatly shorten the melting time and save energy. [Wide Applications] : Suitable for experiments and smelting of non-ferrous metals, including gold, silver, copper, aluminum, lead and so on. Designed for lab, test analysis and other purposes. It is more suitable for small-capacity metal melting as the size of this product. [Size information]:Outter is 110 x 60 x 30 mm, inner is 90 x 40 x 20 mm; Melting and casting metals like gold, silver, brass, aluminum, copper, zinc, plumbum, and more. Capacity is an approximate volume is 1 kg hold or 500g silver. Please check these sizes before purchasing. Colour: black Material: graphite Package Contents: 1 * 5 in 1 graphite mold 1 * graphite tart mold 2 * graphite stirring rods Only 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.