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, as well as fast cooling; their excellent thermal conductivity properties can shorten the casting time and save energy. Dimension: crucible mould measures approx. 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 approx. 72 x 57 x 12 mm in outer dimensions. Quartz crucible approx. 7 cm in diameter, 2.5 cm in height. Tongs are about 10 inches in length. Cylindrical graphite measures approx. 4 cm in diameter, 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, small-capacity metal melting projects are most suitable. Reliable to use: made of high-density graphite material, providing a smooth user experience and long service life. Resistant to breakage and deformation. Suitable for sharing with friends or family. Color: black. Material: graphite. Package Contents: 1 set x crucible. Only the above package content is included; other products are not included. Note: Light and different displays may cause the color of the item in the picture to vary slightly from the real thing. Measurement may vary by +/- 1-3 cm.