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Glass Carboy Bung Retainer Clamp

Designed for retaining a standard #6 rubber stopper onto a 1-gallon glass carboy. Carboy used: Mouth: ID=28mm, OD=35mm Rib: height=5mm, OD=40mm Two 'inner' parts are threaded and not interchangeable. They surround the lower 'rib' of the…