Adattatore 1/2" rame x femmina - NPT filettato a 1/2" tubo rame sudore
Perfect for the top of your copper column and or pot kettle. (FITS OVER 1/2" copper pipe which has an actual 5/8" OD). Or you can drill a 1/2" hole in your column or pot kettle and solder this right into the hole.