On-Stage SS7746 Subwoofer Pole with M20 ThreadThe On Stage SS7746 Subwoofer Pole in Black with M20 Thread mounts to the top of a sub cabinet and supports a speaker with a standard pole mount socket without using a separate floor stand. The mounting pole with steel construction features a removable M20 threaded lug at the base for connection to subs with an M20 threaded socket, a connection method that greatly reduces tilt and wobble. The shaft's height adjusts from 30 to 54 inches to accommodate