Package includes: 4 pieces of graphite ingot molds, providing sufficient quantity for your DIY needs Quality material: These casting ingot crucible molds are made of graphite material with low ash content, helping maintain metal purity during refining. Durable, sturdy, reliable, and reusable, they resist breakage and deformation for long-term use Size detail: External dimensions approximately 100 x 50 x 25 mm (3.94 x 1.97 x 0.98 inches), internal dimensions approximately 90 x 40 x 20 mm (3.54 x 1.57 x 0.79 inches). Suitable for casting up to 1 kg of gold or 500 g of silver, meeting everyday requirements Good performance: Features excellent thermal conductivity, reducing melting time and improving energy efficiency. Withstands temperatures up to 2000°C. Offers good resistance to acid, alkali, corrosion, and impact. High compressive strength (89 MPa) and flexural strength (487 MPa) Various applications: Suitable for experiments and melting non-ferrous metals such as gold, silver, aluminum, copper, brass, and zinc. Can be used for laboratory analysis and ingot formation Color: Black Material: Graphite Size: 90 x 40 x 20 mm; 100 x 50 x 25 mm Package contents: 4 x Graphite Ingot Mould Note: The package includes only the items listed above. Other accessories are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement allows an error of +/- 1–3 cm.