Lo uso para madera y funciona de manera aceptable Have bought similar attachments in the past, and my biggest irritation is when the grip part comes loose and forces you to cock your wrists to keep the rubber grip part in place. I?ve actually had to replace a couple speakers because the head unit was sending them more power than the old one and they weren?t sounding too great because of it. It?s probably a defective item and I am gonna return the rack. I was hopeful after reading the reviews that this would cause take care of my issues with my AirPods popping out of my ears. The crossbars do add noise while youre driving, this is true of any crossbars. In did a lot of looking and I wanted a really light weight stylish bike seat. I?m going to try them for another couple of days and if they and the case don?t get to 100% I?m sending back. The rack has a very simple and stable design. I will have more uses as time goes on and may buy another roll.