38 mm Screw Cap with Hole

Description

This reusable 38 mm screw cap will fit our 1 gallon, 1/2 gallon jugs, and beer growlers. It is made of plastic and has a hole in the middle, which works best with our 3 piece airlock – item 7010. Perfect for small batch experiments or yeast starters.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.