Ideal for quick and easy speaker positioning in live stage applications, the JBL BAGS Deluxe Gas Lift Subwoofer Speaker Pole is designed to hold a speaker weighing up to 125 pounds atop your subwoofer. The gas assist mechanism lifts up to 40 pounds unassisted, making adjustment of the stand's minimum 37" to maximum 57" height simple and smooth. Thanks to the cup adapter, the pole accommodates 1-3/8" or M20 cup sizes. The cam lock secures the pole at the adjusted height. The pole is conveniently transportable.