Adjustable Bunsen burners with threaded needle valve feature aluminum mixing tubes for thorough air/gas mixing; and tapered serrated gas inlet connections for easy tube mounting. Bases are plated die-cast zinc alloy. Shpg wt of all models is 0.5 lb (0.3 kg)

Warning: This product is not approved or intended for, and should not be used for medical, clinical, surgical or other patient oriented applications.