Shape and Size. Tapered, single hole, 6.5mm inner diameter for the hole, 21.5mm diameter in the base. 22mm overall length.Made of high grade Al2O3 Alumina Ceramic, which ensures a great mechanical strength and stable performance while working.Resistance on high temperature. Capable of the temp up to 1600 degree in celsius(2912 fahrenheit)1000V Insulatsion, high corrosion resistance, scratch proof and Good chemical stability.Application. Mainly used in electric heating elements, protection sheaths, insulators.6mm Inner diameter single bore aluminia Aluminous porcelain ceramic tube.Materials: Alumina Oxide Ceramics (Al2O3)Size: 6mm diameter hole, 22mm overall lengthCap Size: 15.
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