Feature:1. EXCELLENT MATERIAL: 99.99 high purity graphite is used as material, which does not pollute metal and has good purification effect. Excellent quartz material with high temperature resistance and low impurities2. STABLE AND ENERGY SAVING: Graphite molds for metal casting have good thermal stability, can withstand 2000 degrees Celsius, shorten melting time and save energy3. CORROSION RESISTANT: Possess good impact resistance and acid and alkali corrosion resistance, excellent performance, and ensure reliability and quality of products4. RELIABLE AND STABLE: Advanced molding technology of quartz protective sleeve, no stress concentration point, low impurities, not easy to break, possess good thermal insulation effect, energy saving5. EXCELLENT PERFORMANCE: Made with fine workmanship, possess compact appearance and stable performance, can make sure durability and stabilitySpecification:Item Type: Graphite Crucible SetMaterial: Quartz and graphite.Package List:1 x Graphite Crucible1 x Quartz Jacket