Gas assist speaker pole with M20 threaded lower end, 38mm pole and 35mm adapter. The JBLPOLE-GA is the easiest speaker stand to use thanks to the internal pneumatic shock that literally raises the speaker for you. The stand’s internal shock easily raises speakers weighing 35 lbs and less with no effort from the user. And, the JBLPOLE-GA requires very little effort from the end user to raise speakers weighing more than 35 lbs. When you’re ready to lower the speaker, we’ve provided a convenient and ergonomic hand grip from which you can lower the speaker - with just one hand. There’s never been an easier, more convenient, or safer way to set up and tear down speakers.