Feature: 1. Metal Smelting: Graphite casting crucibles designed for melting gold, silver, copper, brass, aluminum, etc., ideal for smelting, casting, and refining all kinds of metals. 2. High Purity: High density, high mechanical strength, strong chemical stability, great wear resistance, strong lubricating performance, durable for long term use. 3. Excellent Thermal Stability: Rapid heating and cooling, strong acid and alkali resistance, corrosion resistance, excellent thermal shock resistance and thermal conductivity. 4. Exquisite Craftsmanship: Attention to detail, smooth surface, no slag, ensure that the metal in smelting is not contaminated, practical and reliable for use. 5. Graphite Material: The mold is made of graphite material, safe and eco friendly, firm and sturdy. Compact and lightweight, easy to carry, perfect for metal smelting plants. Specification: Item Type: Graphite Mold Material: Graphite Outer Size: Diameter: Approx. 40mm / 1.6in, Height: Approx. 10mm / 0.4in Inner Size: Diameter: Approx. 25mm / 1in, Depth: Approx. 5mm / 0.2in Package List: 1 x Graphite Crucible Note: Please allow slight error due to manual measurement. Thanks for your understanding.