Say goodbye to dull blades with Rothco Folding Pocket Sharpener. This butterfly-style diamond knife sharpener features a 400 and 600 grit for edge setting and honing. The sharpener has a diamond-pattern handle grip to maximize friction while sharpening your blade and is large enough to sharpen almost anything. This diamond sharpener is made with durable materials and is perfect for campers, tactical professionals, and anybody who enjoys the great outdoors.