... .99% min 3,Resistance 1100 degree, 1000 long time work 4,nonbrowning rod 5, no bubble, no airline High purity glass rod nonbrowning1,glass rod: 2 purity ... 99.99% min3,Resistance 1100 degree, 1000 long time work4,nonbrowning od5, no bubble, no airlineSpecification:Outer Diameter ...