Ink Free Permanent Uprights Pencil Technology Unlimited Letter Perpetual Inkless Pencil Features: Eternal Inkless Pencil: The tip of the inkless pen rubs on the paper to decompose the alloy metal molecules and leave on the surface of the paper. Regardless of temperature or weather conditions, it can keep handwriting for a long time. Durable material: made of high quality materials, writes smoothly, comfortable grip, high quality pencil for writing and drawing.he theoretical writing length of this product is 159 times that of a wooden pencil. Portable: no sharpening of a knife, no ink. No need to sharpen the pencil, no wood consumption, no writing to end. So you can shorten the time to sharpen or refill. Stylish design: stylish and sophisticated design. Provide comfortable writing, no need to worry about ink interruption. It can be used repeatedly, the eraser can be erased and the pen tip can be replaced. Best Gift: As practical gifts for children, students, artists, teachers, friends, etc. What a brilliant choice for students, painters, artists, teachers, etc. Specification: Material:Plastic Size:16.2CM/6.73in Weight:10g Package including： 1 x Inkless Pencil This pen's innovative design can help you overcome anxiety and bid farewell to difficult choices. This pen adopts a silent bearing design, which is quiet and noiseless. The size is, the writing is smooth, and the feel is comfortable. Difficult choice, indecision, solve it in one fell swoop, bring it home quickly High quality materials: Our pen is made of high-quality and environmentally friendly materials, which are sturdy, durable, and very convenient!