... Rods High Purity :tungsten 99.96% Dia. :5-20mm Length :50-1500mm Application:making filament,setting ... etc tungsten RodsHigh Purity :tungsten 99.96% Dia. :5-20mm Length :50-1500mmApplication:making filament,setting rod at ... Ht,electrode,lead,support,typing ,needle ,etc.W1/2/3/4Applied for making electrode,lead and heater componentsNote: ... .95%≤0.001%≤0.002%≤0.001%W1/2/3/4≥99.95%≤0.001%≤0.002%≤0.001% ...