Originally Posted by
Jeff Neese
Not quite 3 for a nickel, but these are available. I don't use Quick-links so these are all I use and I keep a bunch of spares. You can replace the chain with an HG-71 if you want a new chain.
Shimano 8 Speed Bicycle Chain Connecting Pin
These pins don't work on old 5 speed chains. And they are unnecessary.
You can't use QLs on old 5 speed chains for the same reason - they aren't wide enough.