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″ 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. 10-year warranty. Sleeve.