, ensures its practicality and durability, making it Extension rod, 5 / 8 " threaded connecting pipe, extension rod, rain shelter rod, extension tube, subwoofer rod Easy to assemble, everyone can complete it in second Simply tighten each rod to firmly secure it in place Extension rod 5 / 8-11 threaded installation telescopic rod extender, used for horizontal measurement GNSS robot antennae height measurement tripods stabilizer Available in 6 lengths ranging from 10cm-60cm, it can effectively expand the ranges of the device, ensuring functionality and in various applications