S: Our molten metal crucibles are made of high-quality fused quartz using advanced ceramic processing technology. These crucibles offer exceptional heat resistance up to 3272°F / 1800°C, ensuring reliable performance during high-temperature melting processes. The stainless steel handle is comfortable to hold and easy to operate. MULTIFUNCTIONAL SET: The set includes four crucible trays (two of 250 g and two of 100 g) and two stainless steel pliers with wooden handles, providing all the necessary tools for precise and efficient metal melting. CONVENIENT DESIGN: Our crucibles feature tapered sidewalls and pour spouts for easy material removal and increased user convenience. WIDE RANGE OF APPLICATIONS: Our crucibles are suitable for various precision casting processes involving metals such as gold, silver, copper, brass, and alloys. IMPORTANT: To optimize the performance of your quartz ceramic crucible, we recommend slowly heating and applying a borax glaze before use. Following these steps will help produce better results and extend the life of your crucible. Material: Fused Quartz Color: As Shown Package Contents: 2 x Stainless Steel Tongs 2 x 250g Crucible Trays 2 x 100g Crucible Trays Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.