The PN90TNS from Bespeco is a height adjustable speaker pole designed to fit between a subwoofer and a speaker. The flanged bottom works with a wide range of subwoofers including those with 35mm pole cups or M20-threaded screw systems. The height range is adjustable from 29.5 to 47.2" and includes a push-button mechanism with an automatic security pin. Final fixing is provided by an ergonomic knob, which when tightened locks the height into place. The stand can withstand up to 110 lb of weight.