Description: Join these tubes to make a rod or fishing pole. Made of premium copper material, the tubes are of high strength and durable. Exquisitely processed, smooth surface, easy to connect. Small size, it is portable to take in your backpack or your fishing box. A good fishing accessory for anglers. Specification: Material: Copper Size: Type 1: Inner Tuber: Length: 4cm / 1.57inch, Internal Diameter: 9.2mm / 0.36inch, External Diameter: 10mm / 0.39inch Outer Tube: Length: 7cm / 2.76inch, Internal Diameter: 10mm / 0.39inch, External Diameter: 11.3mm / 0.44inch Type 2: Inner Tuber: Length: 4cm / 1.57inch, Internal Diameter: 7.3mm / 0.29inch, External Diameter: 7.9mm / 0.31inch Outer Tube: Length: 7cm / 2.76inch, Internal Diameter: 8mm / 0.31inch, External Diameter: 9.2mm / 0.36inch Type 3: Inner Tuber: Length: 2.5cm / 0.98inch, Internal Diameter: 4.5mm / 0.18inch, External Diameter: 5mm / 0.2inch Outer Tube: Length: 5cm / 1.97inch, Internal Diameter: 5.1mm / 0.2inch, External Diameter: 5.8mm / 0.23inch Package Includes: 1 Piece Rod Connecting Tube(4 Pack) Note: Color might be slightly different due to the calibration of different monitors. Please allow slight measuring deviation due to manual measurement.