Advantages: 1.304 stainless steel strength and resistance to corrosion. 2.304 stainless steel is used for tableware, environmental protection and no pollution 3.NPT thread for creating tighter seals than straight threads. 4.The hardness of 304 stainless steel is 2 times higher than copper, 10 times higher than aluminum. 5.The smooth edges and precision production makes work easier,more effective and convenient installation. 6.It has a hexagonal head for increased leverage,be easy controlled by the Wrench,save more time to improve work efficiency . ProductSiteLaunchDate : 2007-02-17T04:57:59-00:00 Size : No Size SpecificationMet : energy Style : 12-Inch SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 31160000