Bunsen burner with adjustable needle valve for precise flame adjustment;Uses medium-pressure BTU natural gas or high-pressure BTU cylinder gas;5/16 diameter barb accepts gas-supply rubber tubing (sold separately);3 diameter cast-iron base provides stability;5-3/4 overall height

• American Educational 7-1394 Economy Bunsen Burner, 3 Base Diameter x 5-3/4 Height

American Educational 7-1394 Economy Bunsen Burner, 3 Base Diameter x 5-3/4 HeightAmerican Educational