replacement chain for bike

[utajoker]

Hi

I have a 2009 GT Avalanche 1.0 that i haven't used in about 5 years. In my last use i snapped the chain and haven't touched it since.

I don't have the chain so need a replacement. How do i find out what kind/size i need? and where can i buy it from?

thanks,

 

[utajoker]

Thanks, is this the chain tool i need?

http://www.wiggle.co.uk/x-tools-chain-rivet-extractor-one-size/