Great tool but check the bolts regularly
The tool is awesome. I have two, one for my roadie and one on my MTB. The one on my MTB fell apart. Both bolts came out and the allens were everywhere. It did get bounce around quite a bit in my saddle bag and I never checked the bolts. The one on my road bike is still tight and going strong. The chain tool is not as good as having a stand-alone chain tool, but it is better than others I have used and seen, like the Alien. I also like that it is flat and therefore more compact.