This clear quartz rod has high purity, elevated temperature characteristic and low coefficient of thermal expansion. It serves as the material of the bridging rod for single end halogen lamps, fiber optic lighting, quartz making , wafer and push rods in semiconductor industry .We have many specifications for your choice. The diameter ranges from value="1.2" tcsc="0" unitname="mm" w:st="on">1.2mm to value="50" tcsc="0" unitname="mm" w:st="on">50mm..And the small diameter quartz glass rods are our priority products.