Cheap, strong, functional. Check, Check, and Check. If you're worried about weight, go for a wire biner. If you're worried about hooking you're rope or gear when unclipping, go for a keylock. If you're a cheapo like me but still want great functional gear, this is the way to go. Basic and solid. If I have to bail on something or leave gear behind too, much less painful to leave one or two of these behind (costs less than the post climb pitcher of brew). I've accumulated a number of random biners over time (some of which cost almost twice what this one does) and this basic one still seems to be one that gets used just as much if not more than the others.