Rubber stopper for home brewing or wine making. Has 3/8in hole to fit standard airlocks. Fits most 1/2 gallon growlers and 1 gallon glass jugs. Made of natural pure gum rubber. Not for laboratory use. Fitting Note: The opening of your carboy or fermenter should be approximately 1.02in (26mm) for the stopper to have a proper fit. Specifications:Size: #6Type: DrilledTop Diameter: 1-1/4in (32mm)Bottom Diameter: 1in (26mm)Length: 1in (25mm)Hole Size: 3/8in (9mm)
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