This is the Boomerang Jets Turbinator Fuel and Smoke Partition Tank carrying 94 oz fuel and 30 oz of smoke.  This tank is the same tank that is used in the Boomerang Elan and Sprint Jets. The total tank capacity is 124 ounces (3.66 L) .  This tank sits over the CG of the Turbinator resulting in little or no trim changes with fuel burn.  The tank comes assembled and pressure tested with standard 1/8" fuel and vent fittings.  But no clunks.  Clunks available separately.