Complete Melting Kit: This set includes 4 high-quality quartz ceramic melting dishes and 4 steel tongs, providing you with the essential tools for melting metals. Each component is designed to handle high temperatures, making this kit ideal for both beginners and seasoned professionals in metal casting. Usage Instructions: To and performance, gradually heat the quartz ceramic crucible bowls and pre-treat with borax before each use. This preparation helps in preventing premature wear and tear, allowing you to achieve the best results in your metal refining processes. High-Quality Materials: Crafted from premium quartz, the ceramic crucible bowls can withstand temperatures between 2876F (1580C) and 3218F (1770C). The accompanying steel tongs are designed to offer durability and safety, ensuring a secure grip and protection from high temperatures during use. Versatile Application: Ideal for melting and casting a wide range of metals such as gold, silver, copper, brass, , and alloys. This kit is not only perfect for professional jewelers but also for hobbyists looking to explore the art of metal casting and jewelry crafting in different shapes and designs. Colour:White&Silver Material:Metal+Quartz Package Contents: 4pcs x quartz melting crucible 4pcs x crucible tongs Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.