QSC SP-36 - Threaded Speaker Pole - 35Mm Diameter, 36 LengthThe SP 36 is a loudspeaker pole. This black painted, metal pole is 36 inch (914 mm) long with a 35 mm diameter and features a male M20 thread on one end. The installation of the SP 36 loudspeaker pole is straightforward as the pole end with the male M20 thread is screwed into the available QSC KS Series active subwoofers M20 female threaded socket. The main loudspeaker is fitted on the top of the pole by inserting the upper pole end into the available