1、High‑quality spiral cutter core is durable, cutting smoothly, no burrs and not easy to break the core of pencil. 2、The toughness blade core can cut up to 5000 times, can cut pencils with a diameter of 7‑16mm/0.28‑0.46in. 3、Can effectively cut circles, triangles, hexagons and other polygons pencils, simple and efficient. 4、Unique design, practical and intelligent, showing elegance in calmness, and exquisite workmanship highlighting quality. 5、Manual pencil sharpener, can use the fixer to fix it on the edge of the desk in office. 1 x Pencil Sharpener 1 x Fixer   Item Type: Pencil SharpenerMaterial: ABS+IronColor: BlueSize: Approx.  9.3x 9.4x 6.4cm/ 3.66x 3.70x 2.52in(with handle)Suitable Pencile Diameter: Approx. 7‑ 11.6mm/ 0.28‑ 0.46inWeight: Approx. 252.0g/ 8.9ozSharpening Specifications: Round, triangular, hexagonal and other polygonsHow to use: 1. After pulling out the front cover for a certain distance, it will be automatically fixed in the use position. 2. Press the button and insert the pencil to turn it. When it is idling, it means that the pencil has been cut and can be taken out for use. 3. Tighten the screw clockwise to make the sharpened pen tip thicker, and loosen the screw counterclockwise to make the sharpened pen tip thinner. 4. The pencil sharpener can be fixed on the edge of the desk with a fixer.