16" chain

Bought a 16" chain for my 16" chainsaw. Doesn’t fit. Turns out my saw has a different sprocket and needs special chain. If somebody else needs it then let me know. Here is list of saws its supposed to fit:
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Same thing happened to me.
Luckily i took it back, but it does lead to the question “Why are there so many different options for each chain saw size?”

cs-310 it’ll fit mine. I’ll grab it if its still available

Great. That means you no longer need to set trees on fire when cutting them down!