Those "dummy", cassette thingies...

pippi_langsamer-2
pippi_langsamer-2 Posts: 1,470
edited June 2014 in Workshop
No idea what they're called, but I'm trying to find one of those rear thingies you see a lot of mechanics using when cleaning bikes on the stand that are basically a faux "cog", that allows free rotation of the chain for ease of cleaning and to stop the chain clattering around the chainstay.

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