Take HD800 connectors:
Furutech’s beautifully finished, beautiful sounding CF-H800 connectors are the result of meticulous engineering and careful audition of various suitable materials. The CF-H800 features an α (Alpha) phosphor bronze conductor and Nylon+Fiberglass15% insulation for minimal impedance and a nonmagnetic stainless and carbon fiber finished main body and nonmagnetic stainless end ring for superior damping.
•Main conductor: Nonmagnetic Rhodium-plated α (Alpha) Phosphor bronze conductor
•Insulation with Nylon+Fiberglass15% Resin
•Main Body: Nonmagnetic stainless and carbon fiber finished
•End Ring: Nonmagnetic stainless.
•Fixed Tube: Copper Alloy.
•Specified for wire outer diameters up to 3.8mm
•Dimensions: Main Body: 8.5ψx 24.0mm overalllength
Total overall length: 31.0 mm approx. Important customer notice