Body Materials: SS 316, SS 316L, SS 321, Duplex2205, Titanium, Alloy 400, Alloy 625, Alloy C-276. Sizes Range from 1/16″ to 1 1/2″ and 2mm to 38mm. Precision machined components ensure perfect deformation of ferrules and tubing. Threads with smooth surface finish avoid galling and help to extend the fitting service life. Silver-Plated nuts to avoid friction against the body threads. Radius junction design with elbows provides a smooth flow path.