The JBL manual adjust speaker pole has an M20 Threaded Lower End, 38mm Pole & 35mm.
The JBL POLE-MA features an amazing height adjustment collar that features an ergonomic “Z” knob that provides comfortable adjustment. The strongest fitting made, the height adjustment collar prevents over- tightening and breakage issues associated with all plastic designs.
Features
- Lightweight
- Metal die-cast collars
- M20 Threaded socket
- Fits all subwoofers with standard M20 pole threading (JBL PRX, VRX, STX and SRX818)