Fits 6.5 Gal Small Neck Carboys, replaces the bung. It can be used to attach blow off tubes or airlocks. ( NOTE: Fits carboys with the small neck, small neck carboys will have threads molded into the glass on the neck of the carboy. If your 6.5 gallon carboy does not have the small neck use the 3-6 gallon orange carboy cap)ALL of our Carboys that we sell use the Orange 3-6 Gallon Carboy Cap. If you have a question about fitment please contact us at info@nybrewsupply.com
