Feature:1. For Metal Melting: This graphite crucible is mainly used for precious metal smelting, suitable for gold, silver, copper, brass, aluminum and other metals.2. Stable Performance: The crucible has excellent thermal stability, rapid heating and cooling, good shock resistance, electrical and thermal conductivity.3. Pure Graphite: Made of pure graphite to ensure that the metal in smelting is not polluted, with high mechanical strength and strong chemical stability.4. Good Durability: The metal refining mould has good wear resistance, strong lubricity, strong acid and alkali corrosion resistance, and has a long service life.5. Large Capacity: The graphite mold is rectangular design, with 5000g large capacity, suitable for large scale metal melting, convenient and practical.Specification:Item Type: Graphite CrucibleExternal Size: Approx. 150 x 90 x 40mm / 5.9 x 3.5 x 1.6inInternal Size: Approx. 130 x 70 x 30mm / 5.1 x 2.8 x 1.2inMaterial: GraphiteMetal Refining Capacity: 5000g.Package List:1 x Graphite Crucible