The spiral thingies are 3/8" NPT but I can include a SS 3/8x1/2 adapter if you need one.
One other thing. I have a 1 1/2" sock gasket. I dont have a pic on me but its the same as the long one in this pic. $30 shipped.
Former Cellarmaster Pyramid Ales Kalama, WA
Former Bottling Supervisor Strohs Rainier Brewing, Seattle
Current home brewer and Chemical Plant Engineer