They support a pair of JBL LSR308 monitors without any problems

I bought these to support a pair of Dayton (Parts Express) B652 Air speakers

so I order the second pair for replacement, still awful

I'm using them to support a pair of PSB Alpha B1 speakers, which I would classify as both small(er) and relatively light (at 10lbs each)

Don't buy this if you are looking for a good quality pair of speakers stand

well - I probably should have used a tap measure to estimate how big they would be compared to the room