Tip with high precision. The wear-resistant, hard-chromed fine tip allows for working on exquisite details. The ink of the rOtring technical pen has a high pigment density for opacity and lightfastness, ensuring sharpness and adhesion of the lines. It dries quickly on media and is waterproof. This pen can be used on various surfaces such as drawing boards, tracing paper, or vellum drawing paper. The ink bottle is not included. The refillable ink reservoir is ideal for frequent drawers who use bottle inks. The snap-on sleeve allows for quick cleaning and easy access to the ink helix.