The new Korkers Triple Threat Hex Disc sole is fitted with fifteenAluminum Carbide discs per boot that aggressively grip slick rock surfaces. With sharp biting edges and a soft Aluminum surfaces, this Hex Disc tread will both bite into rock and conform to its surface. What that gives you is incredible traction while at the same time preventing lateral movement of the foot. This will give you benefits of both Aluminum bars and Carbide Spikes.