4ft Propane Hose. Compatible with various devices designed for 543g (1 lb) propane cylinders and 9 kg (20 lb) tanks.

To connect a stove or barbecue (high-pressure system) to an upright propane cylinder.

The BOM nozzle is the same nozzle as a small green propane cylinder.

Get rid of the small cylinders; you can connect your BBQ directly to a large cylinder.