IIRC there are 2 lengths, either way I could get you both. I used 10.9 Hex heads and 12.9 socket heads in my build. I think I used the socket heads on my mains. Worked fine and I have had 0 issues in 35,000 or so miles. Let me know if you need them. I could probably do .50-.60 per bolt...it would be under 1.00 per bolt shipped unless you wanted UNBRAKO or HOLO-KROME brand. You would also have to wait until I got them from work.