These are clear 1/2 gallon glass growlers. Great for fermenting small batches of beer or wine, also can be used for making yeast starters.
These are 38mm cap jugs.4-3/4″ diameter x 10-1/2″ tall
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California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.