Furutech makes a wide variety of OEM parts known the world over for their quality construction and superb sound. Our engineers examine every part of the signal and power path no matter how small and optimize each and every connection. Take 6.3mm stereo connectors: Furutech's beautifully finished, beautiful sounding CF-763 connectors are the result of meticulous engineering and careful audition of various suitable materials. The CF-763 features an a (Alpha) phosphor bronze conductor and Teflon insulation for minimal impedance and a nonmagnetic stainless and carbon fiber finished housing for superior damping. Features and Materials Main conductor: Nonmagnetic Rhodium-plated a (Alpha) Phosphor bronze conductor Insulation with Teflon Resin Housing: Nonmagnetic stainless and carbon fiber finished. Cable Clamp: Copper Alloy. Specified for wire outer diameters up to 8.0mm Connections: Soldered Dimensions: Housing: 14?x 37.25mm overall length Total overall length: 70.5 mm approx.