Strong and smooth: The core of the pen is durable, the writing is smooth and clear, the black is not easy to fade, and the writing is lasting.Easy to use and carry, our storage box is made of hard plastic, allowing you to easily remove the pencil core pen. The small size makes the box very convenient and delicate, so that you can disassemble and carry.These pens are highly adaptable and perfectly matched with most pencils. They do not fade, high color rendering, smooth, and help you maintain perfect in daily writing and achieve lasting writing.The design of each lead assignor takes into account convenience and simplicity, and achieves precision and easy use. Suitable for all general writing applications, such as notes and lettersWire length: 60mm. Packing includes: 5 pieces/set of pencil lead filling materialsColour:As ShownMaterial:ResinSize:0.9mmPackage Contents:5 x Pencil Refills