... ,and crockneck tubing. We also manufacture gooseneck machine lights for a variety of applications include; gooseneck lights,support mounts ... mm4.Materials: carbon steel5.Surface: plating zinc, nickel, chrome, bronze, plating black and others 6.Applications: reading lamp, earth lamp ... , medical equipment, USB lamp, USB, bracket , hose for lamp accessorizes series,etc.7 OD2.0mm-22mm, length 50mm ...