The Swix Diamond Disk Tuner allows you to sharpen dull or nicked metal ski/snowboard edges right on the slope. . 88 or 89 degree sharpening for fixing edges quickly. Fits into your pocket or pack so you can conveniently use it when you need it. Housing made from solid non corroding plastic. Diamond disk sharpens thousands of edges without wearing out 7045951208931 19940100012 TA3004