Bird Brain 11820030 Firepot Solid Gel, Set of 6 Bird brain's six, single use firepot solid gel is alcohol based and burns cleanly with no smoke or mess, no refilling is required Each box comes with a free adapter which allows the can to work in any firepot with an opening of 2-1/2-inch Each single use 3.35-ounce can burns for approximately one and half hours Includes tool for easy can removal