Campfire Propane Adapter P434 by Gascru Safely and easily connect your Gascru propane adapter to a 1 lb disposable cylinder Connects to Acme (new style) and POL (old style) connections Has a male Acme thread and female POL x female 1" - 20 female throwaway cylinder thread Can be used to connect an appliance designed to use a 20 or 30 pound propane tank to a 1 pound disposable cylinder Easy to install