What are they for?
Uni-Ball's ChalkGlass Markers are designed for decorative displays, often found in shop windows, bars, cafe's and restaurants. They can be used to write on most non-porous surfaces. They work extremely well on glass and chalkboards, and can also be used on surfaces such as glass and metal.
How do they work?
The pens have a special fibre tip with a pump-action mechanism to deploy the ink. The pens are filled with specially formulated chalk pigment, which is opaque and colour rich. The ink is water-based and can be easily removed from non-porous surfaces with a damp cloth. You simply write or draw your designs on your desired surface and can wipe it away when you're ready to change it.