Amazon.com : Artline 5109A Big Nib Magnum Whiteboard Markers | Extra Thick 10.0mm Flat Tip | Writing is Readable from a Great Distance | Dry Erase | Low Odor | 4-Pack: Black,
HC270471 - Berol Whiteboard Marker - Assorted Colours - Chisel Tip - Pack of 8 | Findel International