I saw on a camp stove forum discussion of using those butane canisters to refill the threaded canisters (threaded, such as MSR, Primus, Optimus, etc.).

Then I was really surprised to see those tall skinny butane cannisters for sale in some of the RV campgrounds that I stayed in on my last bike tour. Since then I have bought the tools that I would need to refill my threaded cannisters from the tall skinny cannisters, in case the tall skinny ones are the only ones available.

I have also bought some of the tall skinny ones to make sure I knew that my re-filling tools worked. Yes they did. But a stove like the one you had (below) could be a useful thing to have as a backup plan. It really surprised me that the tall skinny cannisters were for sale at those RV campgrounds but the short threaded ones that our campstoves are designed for were not available for sale at those campgrounds.



And of course no cannister stove discussion is complete if you don't mention the puncture type canisters like you previously posted in post number 107, above. (I showed the adapter for them in post 116.)

Or the non-threaded GAZ cannisters available in and near France, like the one below. The MSR Superfly stove that works on it is also shown in the photo below. I believe that Primus also makes a stove that works on these, plus GAZ makes a few stoves.