Screw Cap with Airlock hole - 38mm
Product Details
No more blowing the stoppers off of your small batch fermenters! This reusable 38 mm screw cap will fit 1 gallon and 1/2 gallon jugs (growlers). It is made of plastic and has a hole in the middle, which works best with a 3 piece airlock. Perfect for a tight seal on small batch experiments or yeast starters.
