20 Airlock grommets. Use for replacements to add an airlock port to the vessel of your choice.
As if this posting, this is eBay offering is selling for just $5.75. Shipping is an additional. Prices, shipping and availability can change quickly. Please note that product prices and availability are subject to change. Prices and availability were accurate at the time this this post was published; however, they may differ from those you see when you visit the product page. Check the product page for current price, description and availability.
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