I can't find out if it's referred to as a cog or cassette or what?!?
I'm trying to remove the group of gears off the back axle. I'm reading that there's a specific tool, but if I don't know which parts are supposed to turn then I don't know which tool to get.
I was going to just make my own tool as I have the means to do so, but like I said I don't know which part turns and in which direction?