Winmau ASPRIA Steeltip darts Dual Core. Revolutionary bi-directional precision cut. Axis-Grip featuring the latest CAD CAM machining technology enabling total control and unrivaled attention to detail. The unique dual core fusion technology incorporating 95/85% tungsten front loaded billet to enable perfect balance and trajectory to the target. Darts that herald a new era of dart design, craftsmanship and accuracy finished with genuine gold plating and onyx coating.