KOBLENZ 1-1/4 inch adaptor makes a great inflator for anything from a sleep over mattress, swimming pool float, balloons and other inflatables with just the touch of your wet-dry-blow vac button. Simply switch your wet-dry-blow vac hose from suction mode to blower mode by inserting it into the blower port located on the back of the vac. Place the adapter on the other end of the hose and turn on the vac. A must-have for any household!