In this video, I show how to quickly and easily determine if you have a freewheel or a cassette, and how to remove and reinstall both types. I have several other videos on the many different type of free hub/cassette style interfaces plus freewheel overhaul videos if that's something you're interested in trying to tackle. If you have a special request for your particular situation, let me know in the best English, non slang version that I can understand, and I'll make another video.