Stage Edge Tuner, Black Quickly sharpens side edge of skis and snowboards Fits in pocket 88 degree or 90 degree bevel 3.75 inches x 2.25 inches 2-sided for multiple degree edge bevels Choose 0 degree for park and recreational riding Choose 2 degree for sharper, more aggressive edge bite 2-sided removable file offers coarse and fine-toothed filing options