I have been looking at new chains and was wondering what "mushroomed pinned" means? I am thinking that the pins have a mushroom like top on the ends to hold the plates in place, is that correct? Does that mean I would need a special chain tool to break the chain? Would I need special mushroom pins to re-join the chain together? Specifically the chain that I am looking at that says this is the KMC 810 Kool Chain.