Lincoln Style Nipples, 1/4 in (NPT) M
Positive action locking mechanism so coupler cannot be detached accidentally|Extra large air passage insures greater air flow|Automatic air check valve shuts off air instantly when uncoupled, providing leak-proof seal|Corrosion-resistant steel plug and stainless steel check and check spring for long service life|Free swiveling action prevents curling or kinking of air hose