AusPen makes reusable markers that completely eliminate the need for disposable markers. Every part of the reusable markers can be replaced, from the ink to the dry erase marker nibs, so you can continue to use them for years. Order a pack of 20 chisel or bullet nibs and you will have a like-new marker to write with every time. Bullet nibs give you a bold, rounded stroke and chisel nibs can be used to make sharp, pointed strokes or thicker, flat strokes. These dry erase marker nibs can be used in any of your AusPen reusable markers to easily replace worn-out nibs.