Originally Posted by bairdco
this is a skiptooth chain. or technically, a "1 inch pitch" (or skiplink, or skip-a-link)
it's wider than a common 1/2" pitch chain, and notice how the links alternate from 1" to 1/2".
a standard 1/2" pitch chain will not work with skiptooth sprockets, due to the width and the smaller link is not quite 1/2".
As I'm sure many people guessed, treasuring my anonymity as I do and being parranoid about giving my real name anywhere anytime, I chose "Allen Wrench" for an on-line alias. But I almost picked "Skip Tooth". There ya go, newbies. It's still up for grabs.