Product Description Nitto Style Female Coupler – 3/8″ Barbed tail 20SH Nitto Style female standard coupler with 3/8″ Male Barbed Tail.Industry Standard Code: 20SH Features: One way automatic shut off valve Wear resistant hardened steel internal componentry. Large flow rate 3/8″ Barbed tail tosuit 3/8″ (10mm) Air Hose