Here's the message I got back from Sindrift Adventures:
Thanks for checking with us.
We do carry a lot of different accessory cords, but the 2mm is not Spectra. The only true spectra we carry is in 5mm.
The 2mm that Frank bought is available in green, blue, and black at the moment. (maybe not 100’ in blue, but we could get it).
The 2mm is 10 cents per foot. Breaking strength is about 175 lbs.
Shipping would be $6.
If you are interested, just give us a call and we can do everything over the phone. 864-834-3019
Thanks again for your interest.
I would really like to find a source for the stuff used on the HH. I contacted HH again and the lady I talked to said she would check with Tom and see if he may sell some.