Each foot of No-Burst contains 250 feet of stainless steel wire Non-toxic polymer core resists chlorine and chloramines Tightly sealed cone washers Easy to grip, exceptionally flexible nickel-plated brass hex nuts 3/4 in. female hose connectors at both ends Exceeds all pluming code requirements Meets agency standards IAPMO Standard, PS74-95, CSA, SBCCI, FDA, NSF-61, A112.18.6 and UPC