:It is made of high-quality quartz material and is made with modern ceramic processing technology.It is mainly used for high temperature melting alloys such as alloys and , with a high temperature resistance of more than 2000 degrees.The round interior of the bottom of the bowl is easier to completely empty, a practical tool for melting gold and silver.It is suitable for electric light sources, semiconductors, optical communications, metallurgy, building materials, machinery, electrical, environmental protection and other fields.Only 1pc Quartz Crucible, excluding other demo accessories in the picture.Specification:Material:QuartzSize Chart:Diameter: 6cm/2.36inchHeight: 2.2cm/0.87inchWall thickness: 0.5cm/0.20inchPackage Includes:1x Quartz CrucibleNote: Please allow slightly error due to manual measurement. Due to the di