This cable is called CDC, critically damped conduction. Its metal proprietary cooper matrix, jacket is clear Teflon. Its in excellent condition. This cable was selling for $140 per ft when new, whew! I was told by the original owner that Mr. Klyne just could not get this price down so he did not make many of these. I read in The Absolute Sounds 1992 Directory Klyne had cables similar to these I'm selling, for that $140 ft price and it was called SWQ-1. My price is for a 8 ft pair. I do not know its specs. The cables have copper spades on one end and compression double type copper spades on the other, I don't know what else to call it. I had this cable for several years, replacing my Randall Research 32 TBC cable, 5 ft pair which I used as my reference connected to a pair of Dahlquist DQ-10 Mods. I use the Randalls on the Sequerra Tweeter now. Its one of the most open and transparent cables I found next to Randall, which still has better dynamics. I use 2 more pair of Randalls of different types. Please go to the USPS site for shipping costs based on my weight and package dimensions.