Our Production-Grade SS7748 Air-Lift Speaker Pole features an integrated mechanism that provides assistive power, making it safe and ergonomic for one person to raise and lower a heavy speaker. Designed for professionals and built to last, the SS7748 now includes a metal knob, which can sustain high usage without stripping or cracking. This shaft mounts to the top of a sub cabinet to support speakers with standard pole-mount sockets, without using a separate floor stand. The mounting pole's adaptable threading at the base connects to subs with either an M20-threaded socket or a standard unthreaded socket.