Downsize from a 20Lb propane tank to a 1Lb canister 100% solid brass Eliminates the need to lug around a 20Lb tank when traveling with your grill Works with full-size gas grills and portable grills that have a built-in hose Attach one side to the end of the grill's hose and the other end to a 1Lb canister If your 20Lb propane tank runs out of fuel while cooking, turn off the grill, unhook the hose from the tank, attach this adapter to the end of the hose, and connect a 1Lb canister to continue grilling