Due North Ice Cleats Replacement Spikes - 6 Pack Fits all Due North Traction Aids Made with Tungsten Carbide, is ten times stronger, wears longer, is inherently spark resistant & retains its ice piercing edge better than steel. Superior traction eachIce Diamondspike works independently, piercing uneven surface contours to provide the ultimate grip on ice and packed snow. Easy to replace simply push replacement spike from the inside to the outside of the sole to replace spikes. Conveniently available in packs of 6