Increases safety and reliability of your MSR stove system Includes o-rings, jet & cable tool and lubricant for preventative maintenance Handy carrying case MSR Annual Maintenance Stove Kit: Control valve o-rings (2). Fuel tube o-rings for standard pumps (2). Fuel tube o-rings for dragonfly pumps (2). Fuel bottle o-rings (2). Safety pin (for o-ring removal) (1). Jet and cable tool (1). Pump cup oil (1).