SRAM

I bought some sram links from chain reaction a while ago and noticed today the they say 8spd on them when the one on my bike at the moment say 9spd. Now does this make a huge difference as the packet on the links says 9spd as ordered but like i say the actual link says 8. I am confused if i can use these or not.
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Parktools
What colour are they?
Parktools :?:SheldonBrown