The BIC Velleda board Marker is a dry-wipe, alcohol-based ink pen with a visible ink gauge to help you establish when a replacement is needed before it runs out. With Liquid Ink Technology and better eras ability (compared to most BIC Velleda Markers) than ever before, these whiteboard Markers will give you a much better writing experience whether in the office or classroom. With translucent tank barrels, you can easily see how much ink is left and the large 4.2mm bullet tip gives you greater coverage and a line width of 2.2mm. With great eras ability, mistakes can quickly be undone and written over, making BIC Velleda Board Markers the ideal aid for your work. Available in a blister pack, you can ensure your office stationery set has the writing instrument you need for the task ahead every time. Available in pink, purple, turquoise and blue ink. The BIC Velleda board markers are also available in a handy wallet, so you can fill your pencil case with a variety of different pens for all your tasks.