&frac12;" Compression Poly Hose Shutoff Valve (compatible with &frac12;" (16mm) poly hose (.710 O.D. x .620 I.D.) compatible with " (16 mm) poly hose (.710 O.D. x .620 I.D.) poly hose shutoff valve (fits .710 O.D. poly hose) compression shutoff valve compression poly hose valve comes with blue insert rings