The B-6 speaker cable uses six 16 gauge conductors. Two are used for positive and two are used for negative. The total is then 11 gauge per leg.
The conductors are solid core high purity Copper (99.98%) with a 30 mil polyethylene insulator.
Lengths and prices are:
6' pair $399.8' pair $479.10' pair $559.12' pair $639.