The reason why this metal inkless pen can write without sharpening a knife or ink is that the tip of the pen rubs on the paper, which causes the alloy metal molecules to decompose and stay on the surface of the paper. The nib is made of metal, small in size, and the color is similar to that of a normal pencil, and the writing is smooth. The handwriting is also easy to erase with an eraser. There is a long eraser inside, which is easy to erase. The metal erasable pen can use the compressed nib to replace up to 100 traditional pencils, without sharpening or changing the refill; to help you reduce the time of sharpening or refilling, we have included 11 replaceable nibs for you use. No need to sharpen a knife, no ink. Provide you with convenient writing, no need to worry about ink interruption. Non-slip pen holder; sturdy pen holder; comfortable grip. Stylish and sophisticated design. These metal inkless writing pens can be used as practical gifts for children, students, teachers, friends, etc., and can be used as gifts for important holidays such as Christmas and New Year. Manufacturer ‎BOUILLIM Stationery shop Brand ‎No Brand Item Weight ‎3.52 ounces Product Dimensions ‎5.51 x 0.39 x 0.39 inches Item model number ‎pencil05 Color ‎F Grip Type ‎Non slip Pencil Lead Degree (Hardness) ‎B Material Type ‎Metal Manufacturer Part Number ‎Pencil05