Deluxe 20-inch Subwoofer Speaker Pole w/ M20 Threaded Mount 1 3/8 In. Adapter Cap
$27.19
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Deluxe 20-inch Subwoofer Speaker Pole w/ M20 Threaded Mount 1 3/8 In. Adapter Cap
$27.19
ProX X-SPAM20 Deluxe 20-inch Speaker Subwoofer Pole M20 Threaded Mount 1 3/8 In. Adapter Cap. X-SPAM20 is convenient and makes height adjustments easy—mount one end to the top of a subwoofer with an M20 thread, and the other end mounts to a 1 3/8 speaker pocket. The pole is adjustable from 33 up to 53 in total height. It features all-steel construction with a built-in Safety Pin and an Easy-Grip Tension Knob for height adjustment...
https://www.proxdirect.com/products/view/1314