Different from conventional wooden graphite pencils, these pencils used are special alloy tips instead of graphite cartridges, thanks to the metal molecules and paper friction oxidation leave a similar pencil handwriting, it has many advantages: 1. Durable, long service time; 2. Clean, do not have graphite, no dirty hands; 3. Sharpen it? No need 4. Can directly replace the pen tip after use. Upgraded tungsten alloy pen tip: 1. Durable "endless pencil", abrasion of writing 1 metre is approx. 0.005 mm, theoretical writing length is 100 times as long as a wooden pencil; 2. Liquid, will not create a block feeling, so please do not worry that will appear un-smooth handwriting problem; 3. Readable, similar HB pencil, which is clearly visible, even on brown paper can also write, so please do not worry that its line will be very pale No sharpening: due to the properties of the pen tip, no more tedious pencil tips needed, if the tip of the pen can no longer be used, simply replace another tip, the set comes with 6 additional replacement leads. Handwriting erasable: do not worry that its handwriting is indelible, it can also be erased with an eraser rubber, in the pen tube a round eraser strip is installed, please hold the floor during use (a little thin and difficult to strain your strength), it is recommended to use your own eraser at ordinary times, it will be suitable for a rainy day. Fish day in reserve. held in place. Large pen clip: the clip-on book is stable and does not fall easily, easy to carry, great for writing down or sketching, it is also a good choice for school children, they want to like this gift.