Multifunction Sharpener.Slim, lightweight, easily pocketable knife sharpener Coated rod for serrated and standard edges Carbide blades quickly set your edge Ceramic give you a sharp edge Preset sharpening angles for guaranteed results.Lanyard hole for carrying Color: black Material: ABS/Tungsten Steel Blades/Plating Rod Size: . 8 x 2.7 x 1cm () Net weight: .27g How to Use the Multifunction Sharpener? Sharpening Slots 1-Insert knife blade into the V-shaped slots at a 90-degree angle to the sharpening blades or . 2-Pull blade straight back towards you while applying light pressure. 3-Repeat this action until blade is sharp. Tapered Rod: Flat Edges 1-Always hold the unit with the rod facing down. Place heel of the blade on the rod closest to the unit. 2-Hold blade at a 23-degree angle to the rod. 3-While applying light pressure, push from you towards of the rod. Draw knife down so that the tip of the blade comes off of the rod. Repeat this action until blade is sharp. 4-For the other side of the blade, you will need to switch hands holding the sharpener and and repeat steps 1 through 3. Tapered Rod: Serrated Edges 1-Only sharpen the side of your knife edge with the serrations. 2-Hold rod at 23-degree angle to the blade and move it back and forth through each serration until sharp. Package Contents: 1 * knife sharpener Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.