2 Sizes: The outer size of the 1 kg graphite ingot mold is 100 x 50 x 25 mm / 3.94 x 1.97 x 0.98 inches, with an inner size of 90 x 40 x 20 mm / 3.54 x 1.57 x 0.79 inches. The outer size of the 665 g graphite ingot mold is 100 x 30 x 30 mm / 3.94 x 1.18 x 1.18 inches, with an inner size of 90 x 18 x 22 mm / 3.54 x 0.71 x 0.87 inches. Durable Use: These ingot molds are made of high-quality graphite, offering excellent thermal conductivity to reduce melting time and improve energy efficiency. Resistant to high temperatures up to 2000°C, they are also corrosion-resistant, compression-resistant, and less prone to cracking or deformation, ensuring long-term durability. Package Contents: 2 x Graphite Ingot Molds (1 kg mold and 665 g mold). Ideal for various melting and casting applications, suitable for crafting and small-scale metalworking projects. Wide Range of Applications: Suitable for melting and casting a variety of metals including gold, silver, aluminum, copper, and zinc. Can also be used as a graphite crucible in laboratory or experimental settings. Color: Black Material: Graphite Note: The package includes only the items listed above. Other accessories or tools shown in images are not included. Due to lighting and display differences, the actual color may vary slightly from the image. Measurement error is permitted within +/- 1-3 cm.