Size Detail: our ingot measure about 4 x 2 x 1 inch/ 100 x 50 x 25 mm in outer, 90 x 40 x 20 mm/ 3.54 x 1.6 x 0.8 inch in inner, can smelt 1 kg gold or 500g silver, satisfying most of your melting or casting metal needs Quality Material: the graphite mold is mainly made of graphite, stable in texture, firm and sturdy, ensuring that the metal purity will not be affected during metal refining; Rapid cold and hot use conditions, with nice thermal stability Nice Performance: our graphite ingot mold has nice thermal conductivity, which can greatly shorten the melting time and save energy, and withstand 2000 degrees Celsius, nice acid and resistance, nice corrosion resistance, impact resistance, 89 MPA compression resistance, and 48.7 MPA flex resistance Package Content: you will receive 8 pieces of casting ingot , sufficient for your daily use and replacement, can improve your work efficiency, saving your time and energy, can be for a long time Wide Applications: the ingot casting mold can be applied for experiments and smelting of non ferrous metals, such as gold, silver, copper, aluminum, and so on; Considering the size of this product, it is more suitable for small capacity metal melting. size: 100 x 50 x 25mm Material: graphite colour: black Package Contents: 8 x Graphite Ingot Mold Only the above package content, other products are not included. Note: Light reflection 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.