Bottled Gas Bunsen Burner for use with LPG Gas SupplyNickel-plated Bunsen burner with rotatable air regulator and a cylindrical rifled connector mounted on an enamelled pressed-steel base.For use in schools with propane or butane bottled gas supply.Burner Tube: (H)100mm x (D)13mm Base Diameter: 80mm Overall Height: 140mmConnector Outer Diameter: 10mm Neoprene Tubing is recommended for LPG Bunsen Burners.