(Aren’t you glad you didn’t rig your belay line through that?) When using an Arizona Vortex, there’s no stop built into the head. This is one of the features that makes it such a useful tool.

Most rope folks will tell you, at least on this side of the rock, a second line, or a belay system, should be in place anytime someone is traveling up or down a rope in the event of a main line ...