Thanks for all of your thoughtful replies. After dropping the chain on Saturday, I knew I'd start riding with a tool but had not considered a multi tool as I didn't realize that they could break chains. Do they perform when needed? Ihbernhardt says I don't want to be relying on one to break a 10 speed chain, which is what I need it for. True? Or is he useing the wrong one? Seems a good multi tool that would replace all of the other things I carry seperately ( levers,allen set, small screwdrivers, maybe a chain tool) would be the ticket. But I've always shied away from them for some reason.