Zurn Crimp Ring, Series: QickClamp, Ratchet, 3/4 in Nominal, 0.89 in Inside Diameter, 1.06 in Outside Diameter, Clamp Connection, Stainless Steel, ASTM F877, Can CSA B137.5 NSF 1 4, 1/2 in Thickness, 33 - 200 deg F Temperature, 80 psi Pressure, For Pex Hot or Cold Water Plumbing Use