Specification:Length: Approx.157mmDiameter: Approx.7.5mmBlack Lead: 0.7mm(diameter)Features:1. Our product uses environmental plastic material to avoid the waste of wood.No need to sharpen your pencils.2. Automatically transfer pencil lead after installation.3. High quality pencil lead which is less than 0.2mm out of pencil stub makes it hard to break， ensuring smooth and comfortable writing.Please note:Several kinds of color are available， but the color will be shipped randomly.Package Included:5 x 0.7mm Black Lead Mechanical Pencil With Eraser Tip