Complete Melting Kit: This set includes 4 high-quality quartz ceramic melting dishes and 4 steel tongs, providing essential tools for melting various metals. Each component is designed to handle high temperatures, making this kit ideal for both beginners and experienced users in metal casting. Usage Instructions: For best results, gradually heat the quartz ceramic crucible bowls and pre-treat with borax before each use. This helps prevent premature wear and allows optimal performance during metal refining processes. High-Quality Materials: Made from premium quartz, the ceramic crucible bowls can withstand temperatures between 2876°F (1580°C) and 3218°F (1770°C). The included steel tongs offer durability and safety, ensuring a secure grip and protection from high temperatures during use. Versatile Application: Suitable for melting and casting a wide range of metals such as gold, silver, copper, brass, and various alloys. This kit is ideal for professional jewelers and hobbyists interested in metal casting and jewelry making. Color: White & Silver Material: Metal + Quartz Package Contents: 4 pcs x Quartz Melting Crucible 4 pcs x Crucible Tongs Note: Light reflection and display differences may cause slight variations in color. Measurement may vary by +/- 1-3 cm.