Specification Brand : DERNORD BulletPoint : he USA Lab Standard Pressure Tri-Clamp are made of 304 Stainless Steel BulletPoint1 : Pipe / Tube OD: 76.5mm / 3" BulletPoint2 : Ferrule OD (Flanged OD): 89mm / 3.5" BulletPoint3 : Overall Height: 28.6mm BulletPoint4 : Made from red copper BulletPoint5 : Perfect to make a solder or brazed connection. Color : Red ConnectorType : Weld CustomerPackageType : Standard Packaging ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier1 : 658848494477 ExternallyAssignedProductIdentifier2 : 0658848494477 ItemName : DERNORD Red Copper Weld Clamp Ferrule Fits Tri Clamp 3" Tube Outer Diameter ItemPackageDimensions_Height : 4 inches ItemPackageDimensions_Length : 5 inches ItemPackageDimensions_Width : 4 inches ItemPackageQuantity : 2 ItemShape : Round ItemTypeKeyword : sanitary-tube-fittings Manufacturer : DERNORD Material : Copper ModelNumber : 40MP-10-N NominalWallThickness : 0.65 inch NumberOfItems : 1 NumberOfPieces : 20 PartNumber : DERNORD-1691 ProductDescription : DERNORD series long weld clamp ferrule is made from red copper,and they are perfect when the only option is to make a solder or brazed connection. These copper weld ferrules are 28.6mm long. These are perfect for soldering, brazing, or welding to copper distilling column. They are made from red copper, not brass or bronze like some other competitors. This is an ideal solution when welding is not an option and the joint needs to be silver soldered or brazed.