Wintersteiger Ski Man Diamond Stone File, 100mm, Medium 400 Grit

Perfect stone to keep in your pocket while skiing

Gets the job done on ski edges with no negative surprises. Good value for the money spent.

Better than any swix or diamond stone I have used. Fits perfect in guide for base as it's longer than the small short ones and perfect for side guide I use. Cleans easy and puts razor edge when you use this stone first and then fine stone after. Had for 2 seasons and still has a lot more grit to use