Bought this to use with the vertical pole on my 500w sub, and with this I place 2 10" Behringer active monitors. It makes a very neat and stable rig. You can open the angle between the two combi speakers to get a good spread of sound. Its very good quality, durable , well made. and gives a neat solution to multiple speakers with having to carry round extra stands which take up precious stage space! The adapter fits without any issues onto both the pole, and into the two speakers.