After only 3 months of use, one of the stands no longer supports my JBL SXR speaker. It just slides down to the lowest, unextended position within a matter of 20-30 seconds. Will be seeking warranty service but will sell immediately afterwards. I had my old On-Stage stands for 5 years, and although they weren't as nice looking or as promising as these Ultimates, they were always functional. Will buy another pair of On-Stage stands (and for much less too). Also, the Ultimate bag that holds a pair of these stands didn't fare so well in the 3 months either. Already holes and small nicks throughout. Disappointed.