I'm going to order some cables and housing...

[MtnBikerChk]

and I didn't know they come in sizes :(

what do they mean?

http://www.thethirdhand.com/index.cgi?c=Cable/Casing&sc=Derailleur%20Cable&id=384080717011

ex: 1.2x3000mm vs 1.2x2000mm etc etc

thanks!

[johnbryanpeters]

25.4 mm / inch, so

2,000 mm = 78-3/4" long
3,000 mm = 118" long

That what you were looking for?

J

[Repack]

Probably tandem vs normal bike.