Uni-ball Uni Inkview Whiteboard Marker

Uni-ball's Uni Inkview whiteboard markers are made of plastic and have a see-through section around the tip so that the ink level can be checked at all times. These markers, which are available in black, blue, red and green, have a conical tip, providing a stroke width of between 1.8 and 2.2 mm. Each Inkview pen contains oil-based ink that is the same colour as the protective cap.