Standard-Burner-Sievert-870401-p-8704-Standard-Burner-has-a-16mm-diameter-&-is-fitted-with-a-bayonet-connection-It-can-solder-up-to-18mm-in-diameter-&-has-a-1-2k W-Rating-p-p-For-use-with-the-253501-253511-&-253547-Powerjet-p-Sievert-870401-Standard-Burner