2 Sizes: The outer dimensions of the 1 kg graphite ingot mold are 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), suitable for melting up to 1000 g of gold or 535 g of silver. The outer dimensions of the 665 g graphite ingot mold are 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), suitable for melting up to 665 g of gold or 315 g of silver. Please verify the dimensions before purchase. Usage: Our ingot molds are made from high-quality graphite, offering excellent thermal conductivity to help reduce melting time and improve energy efficiency. Resistant to temperatures up to 2000 degrees Celsius, these molds are durable, corrosion-resistant, and compression-resistant, providing reliable performance over extended use. Package Contents: 2 x Graphite Ingot Molds (1 kg capacity and 665 g capacity). Ideal for various metal melting and casting applications, supporting multiple crafting and casting needs. Wide Application: 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. Gift Option: This set of graphite ingot molds makes a practical gift for hobbyists and craft enthusiasts. Ideal for friends, family, colleagues, or classmates interested in metalworking or DIY projects. Color: Black Material: Graphite Package Includes: 2 x Graphite Ingot Mold Note: The package includes only the items listed above. Other accessories or items shown in images are not included. Note: Lighting and display differences may cause slight variations in color between the product image and the actual item. Measurement tolerance is +/- 1-3 cm.