[Information]:The nib is made of metal, which is small and its color is similar to ordinary pencils, it can write smoothly, and the handwriting is easy to be wiped off with an eraser. [Working Principle]:The reason why this metal inkless pen can write without sharpening or ink is that the nib on the paper to decompose the alloy metal molecules and leave them on the of the paper; Inkless pen can be applied on most paper, and the handwriting can be retained for a long time, regardless of temperature or weather conditions. [ And Save Cost]:Metal erasable pens can replace up to 100 traditional pencils by using compressed nibs, without the need to sharpen or replace the refills; It helps you reduce the time of sharpening or adding ink, saving money, and can you for a long time. [Portable Inkless Pen]:No sharpening, ink requirement. Providing you with convenient writing without worrying about ink interrupting. Anti-slip pen rod; Sturdy pen clip; Comfortable grip. Stylish and delicate design, weight to comfort ratio, very suit for right or left-handed children and adults. [Practical Gifts]:These metal inkless writing pens can be regarded as practical gifts for children, students, teachers, friends, etc., 't consume wood, odorless and safe to use; They will be surprised to get such delicate gifts. type: C colour: black + green + red + purple + light blue Material: plastic + metal Size: length about 14cm Package Contents: 5 x Inkless pencil 5 x replace pen tip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.