Great Deal: 20 Airlock Grommets

fermenter grommets

20 Airlock grommets.  Use for replacements to add an airlock port to the vessel of your choice.

This eBay offering gets you 20 grommets for $5.99 with free shipping.  That figures to just 30 cents per grommet shipped.  They are designed to fit a  drilled 1/2″ hole leaving a 3/8″ size opening for the airlock of your choice.

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