100% Made of Quartz 90 Degree 4mm Thick 25mm Wide Quartz with Glow Ball - 14mm Male;

Safe to use:
quartz crystal:Quartz is made of natural crystal and silica
High temperature resistance£ºQuartz glass can be used at 1100¡ãC for a long time.
Good thermal stability. Quartz glass has a very small coefficient of thermal expansion can withstand severe temperature changes, and is stable at high temperatures.
preservative. In addition to hydrofluoric acid, quartz glass hardly reacts with other acids.

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