hidden chain bolt -- invention of the devil
I always feal like Macgiver when I'm done working on a crank with a chainring bolt hidden under the arm.
And while I'm on the subject, why the %$^@ does the Park chain bolt tool have a long protrusion in the middle. I guess the hex head side of the bolts are supposed to be hollow and its a guide? Anyway, mine aren't hollow. So the tool won't fit. Boo hoo. Back to using the old block plane blade to engage the slot in the bolt.
The Campy tool doesn't have the long protrusion in the middle -