Review on Efficient and Versatile - POWERTEC 71164 Cam Clamp 20 for Reliable Holding Power by Gunaraj Callaham

When I ordered them they arrived and the bolt thread looked damaged. When I looked more closely 30 times, I saw that it had been eaten away. So I decided to replace it. When the replacement order arrived, the replacement filaments were even worse than the previous ones. So I returned them for a refund. The cams looked great, oddly colored (like the anodizing was done too quickly and they're "seconds" as they call it), but if the bolt won't let the cam rotate, they're nothing more than slag. So be sure to go through the threads from top to bottom when you get them. The quality is terrible and I have no doubt others will see this issue soon if not already. And that kind of quality shouldn't have made it pass quality control once, let alone twice. (I've tried uploading pics but it won't let me. The Revain app has been a little "shaky" lately, so make sure you skip streams to the end before saving.)