| Item # | DIY300 |
| Weight | 0.04 LBS |
Perfect for mason jar food fermentations. The one-way silicone airlock allows gas from fermentation activity to escape without letting oxygen in. No need to burp the jar or mess with water-filled cup airlocks. Fits most wide-mouth mason jars, and can be used with the standard metal locking ring for the lid.
| Item # | DIY300 |
| Weight | 0.04 LBS |
