Start your ski edge tuning procedure off right with the Coarse Wintersteiger Ski Man Diamond File Stone. This 200 Grit file stone is 100mm and works best when used wet and with a file guide. The innovative diamond design of this stone comes straight from Europe and is built to last. The composite material body is manufactured to resist flex, while giving you a responsive feel while you tune the edges of your skis, snowboards, or skates. Remove burrs from your ski edges while simultaneously polishing them to a high performance shine.