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 emergency or cold-start conditions. 3. Offers excellent corrosion resistance, impact resistance, and resistance to acid and alkali. 4. Can melt gold, silver, platinum, and other precious metals and alloys; provides long service life. 5. Retains the natural properties of original graphite with stable physical and chemical characteristics. 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