?Oblique Storage Box Non-punch Rack Bathroom Multi-purpose Wall Shelf Plastic Hanging Wall-mount p?

Features:
This fermentation air exhaust valve can help to release the air inside a brewing barrel.
You can use it to isolate air and makes the barrel interal environment fits for fermentation.
It can release air smoothly and slowly, the a one-way valve design makes the air won’t flow back.
Made of plastic, it is not easy to break nor to crack, is healthy, non-toxic and convenient to be cleaned.
The one-way exhaust valve is compact, won’t take much space, easy to carry or store.
Specifications:
Material: Plastic
Color: White
Size: 11cm
Package contains: 1pc
Note:
Please allow slight dimension difference due to different manual measurement.
Please note that slight color difference should be acceptable due to the light and screen.