Staedtler Lumocolor Non-Permanent F Width Pen Pack - 4 Colors w/ Stand-Up Box - Red Blue Green Black 316 WP4. The universal action of the Staedtler Lumocolor Non-Permanent F width Pen Pack w/ Stand-Up Box makes it perfect for overhead projection. And water-soluble ink means that the Lumocolor Pens can be easily wiped off almost any surface. This feature makes the Staedtler Lumocolor Pen Pack w/ Stand-Up Box airbag-safe and ideal for traveling. You can also refill these pens with Staedtler Lumocolor Non-Permanent F Width Refillable Pens so they're always ready for your next lesson. For more fine line pens please check out the Staedtler Lumocolor Pen and Refill Station. Specifications for Staedtler Lumocolor Non-Permanent F Width Pen Pack - 4 Colors w/ Stand-Up Box: Manufacturer: Staedtler Color: Blue Green Red Black Additional Features: Non-Permanent F Width Features of Staedtler Lumocolor Non-Permanent F Width Pen Pack - 4 Colors w/ Stand-Up Box: Universal pen for use on almost all surfaces Suitable for overhead projection Can be wiped off film using a damp cloth Water-soluble ink Fast-drying PP barrel and cap guarantee long service life Airplane-safe - automatic pressure equalization prevents pen from leaking on board aircraft Stand-up STAEDTLER box Superb colour brilliancy Lightfast colour black Line width F - fine (approx 0.6 mm) Refillable with refill station 487 15 Package Contents: Staedtler Lumocolor Non-Permanent F Width Pen Pack - 4 Colors w/ Stand-Up Box Staedtler 316 WP4: Lumocolor Non-Permanent F Width Pen Pack - 4 Colors w/ Stand-Up Box - Red Blue Green Black