Ideal for use on paper, as the ink does not bleed through. Intense colors and low odor. Dries in seconds, making it perfect for left-handed users. Safe when dry – can be left open for days without drying out. Water-based ink that can be washed out of many fabrics. Locked tip. PP casing and cap ensure a long lifespan. Airplane safe - automatic pressure equalization prevents the pen from leaking on the plane. Line width approximately 2.0 - 5.0 mm. Refillable with refill station 488 56. Available in a stand-up STAEDTLER box.