3 Section Center Column Extension Rod: The shaft can be installed on the tripod without the shaft, extending the height of the tripod to photograph more scenery. for most tripods to increase tripod height. Easy Switching: The top panel is loosened to the right, screwed to the left, and can be easily converted between /4 inch and 3/8 inch screws, suitable for more devices, such as: , stabilizer, phone clips, cameras, etc. Aluminum Alloy Material: CNC anodizing , rich texture, compact and portable, , strong bearing capacity. Retractable Design: 3 section retractable design and rubber adjusting knob are to meet the needs in different scenes. Bottom to Tripod: The bottom 3/8in threaded hole can be connected to the tripod by distributing 3/8in to /4in screws, suitable for most tripods on the market, and easy to increase the height of the tripod or monopod.