【Optional Extension Rod】: The SVM-E extension rod can be added to help increase the height of the monopod by 30cm, ideal for higher shooting or simulating camera crane. Morever, the extension Rod also works well with Rapid System and can be only work with the tripod base. | 【Adaption to SIRUI Monopod】: Thanks to the quick-release system, the extension rod will be compatible with SIRUI P-325FL /P-424FL series and SVM-145/SVM-165 series monopod. Mount the extension tube on monopod to increase the height by 30cm to shoot at a higher level. | 【Quick Lock/Release Plate】: Extension rod feature the same innovative quick-release system with SIRUI camera monopod. Pull down the collar to release the top plate or insert the top plate to lock your device automatically. Only 2 steps to switch different devices in seconds. | 【Wide Compatible】: Also with innovative one-button release reversible 1/4" and 3/8" screw, SVM-145 can be converted screws quickly and compatible with different heads or DSLR cameras. | 【Specifications】: Model: SVM-E extension rod | Material: Carbon fiber | Section: 1 | Tube Dia: 1.3”/32mm | Length: 12.6”/32cm | Weight: 0.4lbs/0.17kg | Max load: 22lbs/10kg