The tool Edge Tuner ToolCastlerock tool Dakine allows easy adjustment anywhere. The large surface rests easily against the sole, positioning the file at the right angle for a perfect edge. With a choice of two angle settings : 0 degrees for soft or normal snow, and 2 degrees for more support in hard and icy conditions. The double-sided file lets you choose an aggressive double-cut pattern for fast removal of a lot of material, or a traditional single-cut pattern for fine adjustment.