Originally Posted by
operator
the CT-3 will not do the new 7900 dura ace chains, that the OP is planning on getting. The CT 4.2 will.
I've used the CT-4.2 and it's really nice. No little metal prongs to break off like on my CT-3. Instead, the link is held in place inside a metal cavity. Plus, the drive pin is long enough to allow you to push the pin all the way out of the chain which makes cutting new chains easier.