A goldplated 3.5 mini jack with a M8x0.75 thread that fits the Ultrasone headphones.
Special for building you own spare cable without havinmg to sacrifice you Ultrasone spare cable.
You can use heatshrink or a handle of the Neutrik mini that you can find here.
You can always email me for building advice.
Also please email for a better p[rice on higher quantities.