I just wanted to know what these bolts are for and why do they have such a special locking mechanism? http://biketools.co.uk/product/4/954...t-And-Cap.html
I have a very similar one from campy on my Bike (with two holes aswell), and the cranks are going loose all the time. Could this be related to not having locked the bolt properly? What tool do I need to achieve this? I have a similar system with my Bottom Bracket, but the holes are bigger...
Thank you very much for any help!