Originally Posted by
MichaelW
Cassette (rear) or chainring (front) or crankset (all of the front bits -cranks and chainrings).
Without the correct tools you could damage the parts.
parktools.com has a good illustrated guide but you have to know which part of ther bike you want to remove.
Sorry, I meant rear cassette chainring lock
I do use the park tools instruction. However my problem is that it is way too tight and I am worried about the damages to the wheel with the amount of effort that it seems is required to remove this.