Gig-e RJ45 FF connector?

[Rockin Mike]

I have (for example) two 10' cat6 cables and I want to make a 20' cable out of them that will work at Gig-e speeds. Is there a FF connector out there that can join the cables properly?

 

[jdabbs]

What you are describing is a coupler:
http://www.monoprice.com/Product?c_id=105&cp_id=10519&cs_id=1051903&p_id=7286&seq=1&format=2

 

[Dreamslacker]

Yes, there are. Look for Cat 6 couplers.