Rockville GASPOLE-B M20 Threaded Air Assist Subwoofer Speaker Pole Mount Stand. Adjustable air assist from 33.5" to 55". Super easy to raise and lower with air assist! Even the heaviest speakers can be raised with very little effort. Air assist can help. Fits all subwoofers with standard M20 threads such as PreSonus, JBL PRX, VRX, STX, SRX818. Load capacity: 140 lbs. Pole Diameter: 1.37" (35mm)
