Adapter 1/2 "-20 Male to 3/8"-24 female. Allows the use of a 1/2 "pressure regulator outlet with a 3/8" standard MP hose
Adapter 1/2 "-20 male to 3/8" -24 female.
Some scuba diving regulators have medium pressure outlets in 1/2 "-20 female. Today's medium pressure hoses are threaded in 3/8" -24.
This 1/2 "-20 male to 3/8" -24 female adapter allows the use of a standard hose.