Good price, good quality
My point of view is that this carbon fiber component cannot work as a micro-vibration filter because it is full of resin and it is rigid, then it cannot decouple anything: I would say it is beautiful but not usefull. It is a Placebo. This point of view is shared by an Engineer in charge of acoustic decoupling on satellite. Nevertheless, if I discover a benefit on the sound of my speaker with these things I will come back and I will apologize...