I have seen the ones that convert the "spray-can" style to the iso-threads. Personally, I'm looking for the ones that adapt the "green propane bottles" to fit my Optimus Crux style stove. This is not for an AT hike, but for a base camp type of use. I would really appreciate any info I can get such as the name of one, somewhere I can purchase it, hyper-links, etc. Thanks in advance!