38 mm Polyseal Screw Cap

It is exactly as advertised. 1/2 gallon, amber, polyseal cap, and empty.

It's a cap I just received an obligatory review so here it is... it's a cap I'll leave it at that and go $% your self northern brewer for sending me this I better get a promo code

Cheaper than Amazon and does the job

I use these to store my mead, sense there is no pressure build up they work just fine.

They are not to be trusted long term but we use them to bring a gallon to a party from a keg. They work fine. #p3brews