Upgrade your gas stove to a multifuel stove. The upgrade kit for people who already have the gas version of the 327993 Gravity EF, but would also like the option of using liquid fuel, including white gas, lead-free petrol, and even kerosene in emergencies. The kit has a 0.6-liter fuel bottle, ErgoPump, a multi-tool with a cleaning needle, fuel cup and jet nipples. A practical storage bag is also included.