Pole Mount 35mm, adjustable, M20 thread. It can be used on all DVA subwoofers (S1521N, S2585N, S1518N, S30N, S10DP, S09DP, S08DP, KS10, KS20), DVA T8, DVA K5, SUBS D, SUBS H, ARENA SW15 and ARENA SW18. It allows the installation of any loudspeakers provided with a 35 mm hole above on any subwoofer with a M20 flange.