Mechanical Pencils & Mines
What is the hardness of pencils?
Quick and easy to find the right Feinmine
The anti-mine break system simply explained
Why do not pentel fine mines break?
In addition, Pentel relies on the strongest fine mine in the world. The AinStein fine mines are extremely unbreakable and extra stable due to the ceramic honeycomb structure. With this technology, Pentel is the first manufacturer on the market that offers 0.2 mm mechanical pencils & fine mines.