Description Package includes: you will receive 4 pieces of graphite casting molds in the package, enough to meet your daily DIY needs. Quality material: our casting molds are mainly made of graphite material, with almost no ash content so that the metal refining process does not affect the purity of the metal, making them durable, sturdy, reliable, and reusable, not easy to break or deform, you can use them for a long time. Size detail: the outer dimension of our silver gold casting mold is approx. 100 x 50 x 25 mm/ 394 x 197 x 098 inches and the inner size is approx. 90 x 40 x 20 mm/ 354 x 157 x 079 inches, and the capacity is about 1kg gold or 500g silver, suitable size can meet your daily needs. Good performance: our casting mold has good thermal conductivity, which can significantly shorten the melting time and save energy, and can withstand a temperature of 2000 degrees Celsius, good acid and impact resistance, good alkali and corrosion resistance, 89 MPA compressive strength, and 487 MPa flexural strength. Various applications: this graphite casting mold has a wide range of applications, it is suitable for experiments and smelting of non-ferrous metals, such as gold, silver, metal, aluminum, copper, brass, zinc, and so on, and it can also be used for experimental analysis after graphite crucibles have been melted into non-ferrous metals, such as casting molds and other purposes. Color: Black Material: Graphite Size: 90x40x20mm 100x50x25mm Package Contents: 4* Graphite Casting Mold 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.