Just don’t do it. If you already have them, no need to run out and replace, they will break soon enough. Then get alloy. If you want to look like you have carbon, get plastic. CBC will not even participate in the illicit commerce, the peculiar institution, of carbon bottle cages. You got to take a stand sometimes. Those things stink. There is nothing good about them. I don’t hate them like I hate genocide, but I hate them.