This is a NEW version of the Furutech GTX DR receptacle which uses pure Copper conductors with Nano Technology and Rhodium plating.

The basic body style and features are retained, and the conducting parts are made of pure copper. The difference for the NCF version is that it makes use of Furutech's Nano-technology to obtain better performance. NCF stands for Nano Conductor Formula. This is a NEW Furutech pure copper AC receptacle like the original GTX, but here the part is manufactured with Furutech's NCF technology, which translates into even higher performance that is obvious to the listener at even the first blush of music. 

Specifications

Rhodium-plated (Alpha)
Pure Copper Conductor (0.8mm)
Nonmagnetic stainless conductor spring system
Body material: Nylon/fiberglass with piezo ceramic and carbon damping material
Cover material: Polycarbonate Parts set with nonmagnetic 2.0mm-thick stainless brace plate
Specified for wire diameters of 4mm (set screw)
Dimensions: 104.0 mm (L) x 47.2 mm (W) x 28.0 mm (H)

Total attention to detail and build quality extends right down to a specially designed patent-pending conductor pressure plate (see below) that increases contact area Furutech spade terminal FP-209 recommended for 10 AWG wire