The surface of every Step Steel ST-Goal Edge Black 3mm Runner has been coated with a layer of carbon nano-particles to create a fine hard edge (there are no burrs on the edge when sharpened). The mirror finish is obtained by heavily polishing the steel to enhance the glide quality. The hard edge withstands bangs and other impacts and will last longer. STEP has redefined precision giving careful analysis of each production runner.
Step Steel ST-Goal Edge Black 3mm Runner