The DragonFly Expedition Service Kit by MSR is intended for hardcore users or people going on extended trips. the Service Kit is a comprehensive maintenance and repair kit for your liquid-fuel stove and pump.
"This kit will keep your stove running till the second comming!"
The dragonfly stove already comes with a few replacement parts and tools, but this kit is pretty much every replaceable part. If you are going to be away from civilization on an extended trip for more than a week its definitely worth the few ounces to have insurance you will have a hot meal.Fits neatly in the dragonfly's included stuff sack so its there when you need it.