... 5-20mm Length :50-1500mm Application:making filament,setting rod at H.T.etc tungsten RodsHigh Purity :tungsten 99. ... :5-20mm Length :50-1500mmApplication:making filament,setting rod at H.T.etcType &Application TypeapplicationWAl1Applied for making filament,cathodes ... ,setting rod at Ht,electrode,lead,support,typing ,needle ,etc ...