The North Edge Sharpener is a handy pocket tool you can keep with you to remove burrs on the hill or give your skis or board a bit of a touch up when the edges just aren't quite "cutting" it.
40 mm File with Base and Side Edge Guides
Base Edge .5˚ -1.0˚
Side Edge 87˚-88˚
Base Edge 0.5˚ -1.0˚