These interconnects are constructed of silver plated copper with an air dielectric in the immediate vicinity of the inner conductors. The RCA connectors are gold-plated Tiffany with teflon inserts. Capacitance is 18 pico-farads per foot. MRPEG10$200.00 Need assistance? Email musref.roger@gmail.com or call 805-687-2236. Photography by VisionQuest Photography