Coghlan's Sharpening Stone features high quality coarse and fine grit, made from electric furnace abrasive grain. It comes complete with a convenient vinyl carrying case and sharpens most sport knives quickly and easily. Size: 3" x 1.5" x 0.5". Weight: 3 oz. Coghlan's makes the outdoors more comfortable and enjoyable with over 450 accessories for camping, hiking, fishing, RVing and more!