The product is a "must have" for everyone that has a gas grill. Product has 3 components, 1# propane tank, a special adapter that allows the 1# propane tank to fit the 20# empty tank and a fireproof safety cloth. Product will rescue the griller when their 20# propane tank runs out. Until now, the griller would have to either run to the store to get another tank or finish cooking in the kitchen. Ever gas grill owner needs a BAR-B-Q, RES-Q.