Function: 1. Graphite crucible has good thermal conductivity, which can significantly reduce melting time and save energy. 2. Graphite crucibles have good thermal stability, making them suitable for use under emergency or cold conditions. 3. Offers excellent corrosion resistance, impact resistance, and resistance to acid and alkali. 4. Capable of melting gold, silver, platinum, and other precious metals and alloys, with a long service life. 5. Retains the original natural graphite structure, preserving its distinct physical and chemical properties. Specifications: Material: Graphite Color: As shown in pictures Options: 1kg, 2kg, 3kg | Option | Upper Diameter (mm) | Internal Diameter (mm) | Lower Diameter (mm) | Internal Height (mm) | Outside Height (mm) | |--------|----------------------|------------------------|---------------------|-----------------------|----------------------| | 1kg | 65 | 38 | 50 | 115 | 125 | | 2kg | 72 | 44 | 55 | 140 | 155 | | 3kg | 75 | 50 | 60 | 150 | 170 | Weight: 330 - 465g Type: Jewelry Tool Package Includes: 1 x Graphite Crucible