For use with standard adaptors. Double action mechanism prevents accidental disconnection and makes the coupling particularly suitable for trailing hose applications. Maximum airflow rate 1197L/min (42cfm) at 6.9bar (100psi). Maximum working pressure 13.8bar (200psi). Sold loose. https://elecena.pl/product/27252342/draper-51412-1-4-bore-vertex-air-line-coupling-with-tailpiece 2024-11-13 https://elecena.pl/product/27252342/draper-51412-1-4-bore-vertex-air-line-coupling-with-tailpiece 2026-07-14