1、Made of quality aluminum alloy material with CNC oxidation process, fine workmanship, solid and durable. 2、Extend the height of tripod, easy to install and use. 3、2 section design, adjustable length between 26.5-44cm , greatly meet your different needs. 4、Can be freely switched between 3/8 "screw interface and 1/4" screw interface, no need to change screws. 5、With 1/4 inch screw port at the bottom, can be installed on tripod or bracket, etc. Features: 1.Made of quality aluminum alloy material with CNC oxidation process, fine workmanship, solid and durable. 2.Extend the height of tripod, easy  to install and use. 3.2 section design, adjustable length between 26.5-44cm , greatly meet your different needs. 4.Can be freely switched between 3/8 "screw interface and 1/4" screw interface, no need to change screws. 5.With 1/4 inch screw port at the bottom, can be installed on tripod or bracket, etc. Specifications: Material: aluminium alloy Weight: Approx. 194.5g Color: As picture shown Storage height: Approx. 26.5cm/ 10.4in Maximum height: Approx. 44cm/ 17.3in Section: 2 sections Maximum pipe diameter: 25mm/ 0.98in Minimum pipe diameter: 22mm/ 0.9in Screw interface: 1/4 inch &3/8 inch Packing List: 1*Extension Rod