Mindbogger you still have to carry a tool.. Figure if your chain brakes, the chances of a complete link braking off are pretty small. I've only broke one chain so far, on the trail simple snapped at the one link. So in order to put it back together I had to remove that link where it busted. Now I could have used the removable link, but then would have had to remove half a link to use, so needed chain tool. Rather then do that and have a very short chain I used my chain tool to put it back together and finish my ride. Since was only 1 link shorter, still shifted fine.