These cams are significantly lighter than the standard issue BD C4 series. If you are interested in alpine climbing or multipitch trad climbing, I would strongly consider investing in a single (or double?!) rack of these bad boys. They save you energy on the approach, allow you to climb faster, and free up extra weight on your harness so you can either bring extra snacks or send harder (you decide). They function the same as a traditional C4: sturdy trigger action, reliable cam shape, trustworthy. Having the mental confidence boost from a well placed cam and knowing that you're featherweight with these racked on also is a huge boost in morale/performance. Enough said: get these if you want to spend longer days in the mountains.