What size hole do I need to drill?

Hi there You will need to drill a half inch hole - it's also good to apply some petroleum jelly around the inside of the grommet for additional sealing. Best regards GARY Discount Homebrew

The product dimensions suggest this is only 7cm long. Is this correct?

The entire Airlock length is approx. 17cm - it's the chamber section that is approx. 7cm - hope that helps …….Gary, Discount Homebrew

How big a hole do i need to drill to fit grommet

I used 18 mm, it was a bit too big but still worked, but 16 mm would probably be better.

5 X Airlock S Bubble Type With Grommets

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Description

🍷 Elevate your craft fermentation game with the classic S-Bubble airlock!

CLEAN CONTROLLED - Top cap with vent holes keeps contaminants out while showing positive pressure.
PRECISION FIT SEAL - Includes grommets and fits 12mm drilled holes for airtight fermentation.
READY TO USE MAINTAIN - Fill with boiled water or sanitizer; easy to clean and reuse batch after batch.
LONG TERM FERMENTATION CHAMPION - S-shaped airlock minimizes water evaporation for extended aging.
TRUSTED BY ARTISANAL WINEMAKERS - Preferred traditional style for monitoring malolactic fermentation.

The 5 x Airlock S-Bubble Type with Grommets is a durable, transparent plastic fermentation accessory designed for long-term wine and cider aging. Its S-shaped design reduces water evaporation, ensuring reliable positive pressure indication during malolactic fermentation. Measuring approximately 170mm in height, it fits standard 12mm drilled holes with included grommets and features a vented top cap to maintain cleanliness. Ideal for professional and hobbyist brewers seeking precision and tradition in their fermentation process.

Specifications

ASIN	B07F3C4ZQG
Best Sellers Rank	330,733 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 29 in Fermentation Airlocks
Brand	iBrewing
Colour	Transparent
Customer Reviews	4.6 4.6 out of 5 stars (417)
Date First Available	27 Jun. 2018
Item Weight	80 g
Material	Plastic
Model Number	JYYUXXCY
Product Dimensions	17 x 5.5 x 2 cm; 80 g

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MX$1015

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In stock

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Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

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