An extended trip far away from home is no place to remember you forgot to replace that worn-out O-ring. But it happens. Be prepared for anything with MSR's Expedition Service kits. They provide comprehensive maintenance and repair solutions for your liquid-fuel stove and pump in places where failure is not an option. This kit includes the necessary components for servicing MSR's WhisperLite, WhisperLite Universal, or WhisperLite International stoves.