[Material Information]The tip is made of metal, is small and has a similar color to ordinary pencils, it can write smoothly and the handwriting is easy to wipe with eraser. Long eraser inside, easy to erase [Operating Principle]: The reason this inkless metal pen can write without sharpening or ink is the tip rubs on the paper to decompose the alloy metal molecules and leave on the surface of the paper. An inkless pen can be applied to papers, and the handwriting can be maintained for a long time, regardless of temperature or weather conditions. [Durable and Save Cost]Metallic erasable pens can replace up to 100 conventional pencils by using compressed nibs without having to sharpen or replace refills. It helps you reduce the time to sharpen or add ink, save money and serve you for a long time. [Portable inkless pen]: no sharpening, ink needed. Offers you comfortable writing without worrying about ink interruption. Non-slip pin rod; robust pen clip; comfortable grip. Stylish and delicate design, weight-to-comfort , very suitable for right or left handed children and adults. [PRACTICAL GIFTS]These metal inkless writing pens can be considered as practical gifts for children, students, teachers, , etc., do not consume wood, are odourless and safe to ; you will be surprised to receive such delicate gifts. Material:graphite colour:black Package Contents: 12 x Replaceable Graphite Pen Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.