Will be a convenient combination to meet your DIY needs for melting, casting, or refining metal, jewelry, gold, silver, and other materials. Nice features: These graphite casting moulds possess many nice features, are characterized by good thermal stability and fast cooling. Their excellent thermal conductivity properties can shorten the casting time and save energy. Dimension: Crucible mould measures approximately 100 x 50 x 25 mm in outer diameter, 90 x 40 x 20 mm in inner diameter. Each crucible stir rod is about 12 inches / 30 cm long. 5-in-1 graphite casting ingot mould measures approximately 72 x 57 x 12 mm in outer dimensions. Quartz crucible measures approximately 7 cm in diameter and 2.5 cm in height. Tongs are about 10 inches in length. Cylindrical graphite measures approximately 4 cm in diameter and 4 cm in height. Multipurpose: These graphite ingot moulds are widely used for experiments and smelting of non-ferrous metals such as gold, silver, copper, aluminum, lead, and more. Ideal for laboratory, testing, analysis, and similar applications. Given the product size, they are best suited for small-capacity metal melting projects. Reliable to use: Made from high-density graphite material, offering a reliable user experience and long service life. Resistant to breakage and deformation. Suitable for personal use or sharing with friends and family. Color: Black Material: Graphite Package Contents: 1 set * crucible Only the above package content is included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement allowance is +/- 1-3 cm.