Screw Caps
These standard screw caps fit our glass growlers. Choose from a solid metal cap or a plastic one with an airlock hole. Solid caps keep your ferment fresh in the fridge or during transport. The screw cap with a hole allows you to use an airlock directly on the lid of a standard jug. The screw cap with hole works best with our 3-piece airlock. Screw caps feature 38mm threads.
