Features: : The ingot crucible mold is mainly made of graphite material, almost ash-free, to ensure that the metal refining process does not affect the-purity of the metal, is not easy to break or deform, and you can use it for a long-time. Size details: Our silver ingot mold has an external size of approximately 100x50x25mm/3.94x1.97x0.98inch, an internal size of approximately 90x40x20mm/3.54x1.57x0.79inch, and a capacity of approximately 1kg of gold or 500g of silver. Composition: 99.95% graphite, ash-content less than 0.1%. It has excellent thermal conductivity and corrosion resistance. More suitable for refining than silicon carbide graphite crucibles. Good performance: The ingot crucible mold has good thermal conductivity, which can greatly shorten melting-time and save energy. It can withstands temperatures of 2000 degrees Celsius and has good acid resistance and impact resistance. Multiple applications: This mold has a wide range of applications, suitable for experiments and melting of non-ferrous metals such as gold, silver, metals, aluminum, copper, etc. It can also be used for experiments after melting into non-ferrous metals in crucibles, such as steel ingot molds. Specifications: Material: Graphite Outer Size: Approx.100x50x25mm/3.94x1.97x0.98inch Internal Size: Approx. 90x40x20mm/3.54x1.57x0.79inch Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Graphite Ingot Mould Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.