If you are satisfied with our products, please give us five-star rating. Welcome to our store. I hope you have a wonderful shopping experience. Thanks! Specifications: What the product can offer is that it is compact and lightweight, while has high hardness, high strength, long life and 4-in-1 function. Made from tungsten steel and ABS materials and electroplate treatment, the product is durable and compact. For hunting, camping, and outdoor survival use, the portable knife sharpener with built-in lanyard hole is perfect. And it's also great for your kitchen chef's knife. It is suitable for camping, hiking, picnic, climbing and home kitchen, etc. The length of the product is 8 cm, the width is 2.7 cm, the thickness is 1 cm. Item Name: Knife Sharpener Features: High Hardness, Long Life, Compact Material : Electroplate Manual : no Size Details: 8cm x 2.7cm x 1cm/3.15" x 1.06" x 0.39" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Usage: Place the knife sharpener in the left hand on the desktop, and hold the knife in the other hand. Place the knife edge on the V groove with your right hand. Pull the knife back slightly, about 4 to 5 times, and the knife edge will become sharp. Package Includes: 1 x Knife Sharpener