The Camco 59943 Propane Cylinder Adapter allows you to use larger tanks with smaller appliances. It makes it easy to control the fuel flow of gas into a small grill and more. This propane tank adapter is designed to be used with a 1 lb throwaway cylinder. It is also simple to install. It screws into place and is ready for regular use. This adapter is a good device to have on hand while camping or cooking outdoors. Use it to power up an appliance from a 20 lb or 30 lb refillable tank.