This Multifuel Kit transforms your Spider Stove Set or Express Sprider Stove to a multifuel stove. This kit is compatabile with newer Spider gas stoves purchased within the last year (from 2013). This upgrade gives you the option of using liquid fuel including, naphtha fuel and lead-free petrol, and, in case of emergencies, even kerosene. The kit contains a 0.35-litre fuel bottle, an ErgoPump, a multi-tool with a cleaning needle and jet nipples. A practical storage bag is included.