SToK brings you the HOTTEST torches and PUREST butane refills on the planet.  Our torches get up to 2700*F and our butane refills are 99.995% PURE.  Forget all about about the marketing hype of the Chinese and Korean butane importers.  Their 5x and 7x claims tell you nothing about the purity of the gas you're buying.  Don't settle for questionable purity and safety.  Demand SToK FYR!