Yup. It came with my Topek seat bag. Along with tire levers, a mutlitool(slotted and philips screwdriver,allen wrenches), spoke wrench, and hex wrenches. Iv'e used the chain tool after my chain came apart after I rushed to put it back on and did a bad job of it. And to repair a chain of a scout on a Boy Scout ride. His chain broke in the parking lot before we started. Do you have to carry one? Nope. Does it come in handy? You betcha.