B00KCUS07S JBL Professional Gas Assist Speaker Pole ??20 Threaded Lower End, 38mm Pole and 35mm Adapter (JBLPOLE)

Features an amazing height adjustment collar with an ergonomic “Z” Knob that makes exact adjustments comfortable and easy
The collar on the tripod leg fitting prevents over-tightening and breakage issues associated with all plastic designs, plus our die-cast fitting is 30x stronger than materials used by the competition
Manufactured out of extruded double-drawn 6000 Series aluminium tubing, which makes the design incredibly strong but surprisingly light
Fits all subwoofers with standard M20 threading; threaded sockets found on JBL PRX, VRX, STX and SRX818 subwoofers minimizes buzzing and rattling And assures that the Pole will be secure and straight