Premium Burner with needle valve adjustment Inlet tube 10mm dia. Overall height is 120mm Base dia. 80mm Includes: (1) Bunsen Burner - Teclu Burner produces a very hot flame. Suitable for glasswork and soldering. There is a needle valve for fine flame adjustment. Die casted base together with a tapered rifled tube connector. A unique spring-operated gas safety lock is incorporated of the air/gas mixture. For use on Natual gas supplies. Burner tube 13mm dia. Base dia. 80mm Overall height is 120mm (4.72"). Inlet tube 10mm dia.