High hardness alloy nib, high hardness, for and It is mainly used for cutting marks of ceramics, ceramic tiles, glass, marble, steel and other materials There is a cover on the for head, which can effectively protect the nib It's generally used for cutting glass and ceramic plate or engraving on it. An for ideal tool for household and cutting work Humanized pen clip design can be inserted into the edge of the pocket for easy carrying, Manufacturer: Whoasyst