Features:OOTDTYThe nike-sized file section design allows you to sharpen a wide variety of objectsThe sharpening rod can be stowed away and stored in the anodized aluminum housingSimply twist the sleeve to lock/release the toolUse the flat surface of the tool to achieve a razor-sharp edge on any number of hard-to-sharpen toolsUse the V-grooved channel for precise sharpening of points, e.g., darts, fishing hooks, styluses, bradawels, etc. Use the curved side to sharpen serrated blades or smooth other curved surfaces, even shredded glassSome suggested uses:Knives-chisels-Multitools-scissors-kitchen utensils-pruning shears-Bradawls-fish hook-darts-arrowsUse as a utility file, e.g. modeling, shaping metal or wood. Deburring and blunting sharp edgesThe size of a pen with a pocket clip. Length about 5.5 inches closed, 8 inches open Non-slip knurled finger grip surface on the handle for positive control in use SpecificationDiameter: 10mm Diamond Dust Sharpener Length: 12cm Material: Stainless Steel Sharpening Rod with Diamond Coating Quantity: 1 Set (4 Pieces)Package Included1 x 4 in 1 Mini Diamonte Pencil Sharpener