Review on Shimano SM CN900 11 Speed Chain Quick by Chad Aguirre

I've been using Quick Links (as well as the pin method) for many years. Dozens of quick links have been installed over the years. There are no problems - they work fine. Both sets of sitelinks in this package must be out of specification. They would NOT go together. I gave up after 1.5 hours. Damn. I tried putting them together, not even on a chain - they didn't slip together. Pliers, vice, use of concrete floor. Not sure if they are out of spec, fake or something like that. Absolute rubbish. Very upset about that. Buy from someone else.