A tool used get grime off from between the sprockets on the rear cassette of bikes' gears.
Very easy and fast to print.
Here is one example how to use the tool
http://www.youtube.com/watch?v=_nOEQI3DTts
bike_casette_cleaner.FCStd | 251.4KB | |
bike_casette_cleaner.stl | 107.7KB |