Looks to me you could also add the Echo CS-5500 to the list of saws that could use it....I had this saw before and the only bar and chain set-up you could run was their darn safety chain and bar, but after making a little cruder gadget than these, I was able to run a Stihl or Oregon bar and an aggressive chain.......I thought for the size of the 5500 it should cut a lot better, and after the mods it was like night and day, the CS-5500 became a pretty good saw to cut with....If I get time to work on the few I have setting around the garage I'll be ordering a few...looks like pretty good work...