Hiya Hiya makes a 9 and a 12 inch steel needle in size 7. Check out the
Yarn Grove's web site or LYS
I use both sizes knitting socks and have no problems.
It appears that
Addi make a 8 and 12 inch needle.
KA makes a 12 inch cable needle
Boye Balene II needles come in 11 inch