Be composed of ABS fixed base, ABS screw thread lift tube , nylon ribbon ABS material is ... resisting Be composed of ABS fixed base, ABS screw thread lift tube , nylon ribbon 。 The ABS adjustable pipe bracket will be fixed ... ABS screw thread lift tube .Simple installation,safe operation , large adjustable rangeABS material is corrosion resistingspecification is DN50,DN65,DN80,DN100