Aptly a pregnant triangle comet. Simple to set up. As I tilted the speakers to the maximum permitted by this support, I decided to place a screw to hold (more than "fix") each speaker in perfect position. It's more reassuring than to rely 100% on side clamp. Plan to make a small pilot hole in the speakers. Simple to make but considering the price of pregnant unnecessary to take risks.
The strength seems sufficient, but I do not too would climb beyond comets. Ideally I would have liked to steer a little down.
Appraisal: a convincing whole, even inexpensive and effective for pregnant Bookshelf like comets triangles.