The most legendary spirit burner out there, the B25 has been helping outdoor enthusiasts cook for decades. Thanks to its material and structure, it spreads heat from the flame to the fuel, helping it vaporize. This genuine burner replaces the original unit. Consider getting one just in case, if you've bought the gas burner version of a Trangia stove! - Max power 1000 Watts - What's in the box: - B25 burner - Screw-on top with rubber seal - Simmering cap which is also used for dousing the flame Remember to let the burner cool down properly before putting its lid back on - a hot burner can melt the o-ring. Ok, they're available as spare parts but a bit of patience is rewarded with a leak-free experience.