Usage Tips:MATERIALS: Our molten metal crucibles are made of fused quartz using advanced ceramic processing technology. These crucibles feature exceptional heat resistance up to 3272F / 1800C 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 each of 250 g and 100 g) and two stainless steel pliers with whip handle 2A, 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, , gold, silver, copper, brass, alloys, etc. 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 not only produce the best results, but will also extend the life of your crucible, allowing you to maximize its value and effectiveness. Material: Metal colour: As Shown Package Contents: 2 x stainless steel tongs 2 pcs x 2 bowls 2 pcs x 5 bowls 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.