DMT WS4XX 4 3/8-Inch by 7/8-Inch by 3/16-inch Diamond Whetstone Model Extra-Extra Coarse
For extremely fast stock removal of  work-hardened burrs created by man-made snow, rocks and ice and maintain your edge on the slopes with just a few strokes.   Extra-Extra Coarse diamond (120 micron / 120 mesh) for extreme stock removal to repair very damaged edges.  No messy oils needed; use dry or with water.   Durable construction will provide years of consistent performance and reliable service   For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products.    Made in USA.