This gaslight burner has a "Threaded" mount as opposed to a "Slip On" one. If you're not sure which burner you need, look at the base of the tube. It is either threaded or slip-on.

Cast aluminum head with two ceramic burner tips included to accept standard gaslight mantles, like the SM2. 7 1/4" long aluminum venturi. This burner fits the GL1700 gaslight.