1,gooseneck tube,OD2-30mm 2,high strengh,no rebound 3,high flexiblity,swing no noise 4,delivery on time 5,ISO9001 Specification: ItemsSC-005MaterialSpring wires & galvanized iron wireODfrom2mm-30mmLengthcustomizedThreadsM8/M10/customizedSurfaceSilver plating,chromeplate,electrophoresis,baking finish etc.ColourSilver or black or colorizedDelivery time7-15daysPackingPlastic bag and cartonShipping ...