I've been making a lot of kilometers recently. Although I do proper maintenance on my chain (replacement, cleaning and lubing). It can always happen that one of the links break, or that I am with someone, or encounter someone that has problems with the chain. I always carry my Topeak multitool, which contains such a chain link removal tool as well (don't know the word for it).
However, it is probably not the best tool in itself for emergency repairs. I am considering to bring one or a few extra pins, such that I can do a repair. At the same time I also read about these easy in use links that you can also use. My question is: what do you recommend me to bring on my bike trips in addition to what I already got, and why?