Description Feature: 1. HIGHLY EFFICIENT: The mechanical pencil automatically advances a new core by means of a mechanism that makes writing or drawing smoother and more efficient. 2. HIGH ACCURACY: Mechanical pencils are equipped with thin cores and long tubes, allowing them to achieve greater accuracy and detailed lines. 3. WIDE APPLICATION: Because of their consistent line width, automatic pencils are also suitable for applications that require accuracy, such as drawing diagrams, engineering drawings and technical sketches. 4. REPLACEABLE CORES: The mechanical pencils core is replaceable and can be changed with a simple operation. 5. HIGH DURABILITY: The mechanical pencil is highly durable and can withstand long periods of use without damage or failure. Specification: Item Type: Mechanical Pencil Size: Approx. 20x6.5cm / 7.9x2.6in. Package List: 1 x Mechanical Pencil 1 Box x 0.5mm Pencil Core Note: Manual measurement please allow some error.