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Amazon.com: Vondynote Set of 2 Speaker Pole for Subwoofer Height Adjustable Fits M20 Threaded Mount and 35mm Mount Speaker Extender : Musical Instruments
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Amazon.com: On-Stage SS7746 Subwoofer Pole with M20 Thread (for Mounting a PA Speaker Above a Sub Cabinet, 1 3/8” Mount with Optional M20-Threaded Stem, 100 lb Capacity, Adjustable Height, Steel, Black) :
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