K&M 21360 "Ring Lock" 750mm

Great product. The locking system is excellent. However, an oversight on my part...
I was so caught up in the locking system that I didn't realise these poles don't adjust in height...why??? I use 15" subs and 12" tops, tops sit quite a bit lower than I'd like, or would normally set level at. It's fine if speakers are sittting on stage, but if positioned on floor, the tops will sit a few inches lower than ear level. Not ideal.
Why K&M?!

Used this for connecting some peavey top speakers and subs together. It was fairly easy to setup and fitted into the holes on the speakers with no real problem. Speakers were always secure in there as well. As such I would recommend buying these poles if you are on a budget and are looking for something well made that is well priced.