Package includes: 4 ingot molds, providing sufficient quantity for your DIY needs. High-quality material: The ingot molds are made of durable, heat-resistant material with no ash content, ensuring the metal refining process is not compromised. These molds are sturdy, reusable, and resistant to breaking or deformation, offering long-term use. Dimensions: External size measures 100 x 50 x 25 mm (3.94 x 1.97 x 0.98 inches). Internal cavity size is 90 x 40 x 20 mm (3.54 x 1.57 x 0.79 inches), with a capacity suitable for approximately 1 kg of gold or 500 g of silver. The size is designed to meet practical casting requirements. Performance: The mold offers good thermal conductivity, helping reduce melting time and conserve energy. It can withstand temperatures up to 2000°C, with strong resistance to thermal shock, acid, and corrosion. It has a compressive strength of 89 MPa and a flexural strength of 48.7 MPa. Applications: Suitable for use in experiments and melting non-ferrous metals such as gold, silver, aluminum, copper, brass, and zinc. Can be used as an ingot mold after melting metals in crucibles, ideal for various small-scale metalworking projects. Color: Black Material: Ceramic Size: 90 x 40 x 20 mm (inner), 100 x 50 x 25 mm (outer) Package Contents: 4 x Ingot Molds Note: The package includes only the items listed above. Other accessories shown are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement allows for a tolerance of +/- 1-3 cm.