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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الحساب عربة التسوق

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

المساعدة تتبع الطلب

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Description

🍷 Elevate your fermentation game with precision and tradition!

EASY INSTALLATION - Includes grommets for a secure 12mm hole fit on your fermenter
CLEAR USAGE MARKINGS - Top cap vent holes and max fill line ensure perfect setup every time
TRUSTED BY WINEMAKERS - Preferred S-shaped design for superior long-term fermentation control
EVAPORATION RESISTANT SEAL - Minimized water surface area keeps your airlock fluid stable longer
POSITIVE PRESSURE INDICATOR - Visual cue for active malolactic fermentation success

This 5-pack of S-bubble airlocks with grommets offers winemakers a classic, reliable tool designed for long-term fermentation. Its S-shaped design reduces water evaporation, providing a stable seal that visually indicates positive fermentation pressure. Measuring approximately 170mm in height, each airlock includes a top cap with vent holes and a max fill line, ensuring easy and precise use. Ideal for homebrewing enthusiasts aiming for professional-grade wine aging.

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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TrustScore 4.5 | 7,300+ reviews

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