Pentel MAXIFLO Knockle Whiteboard Marker Fine Broad Dry-erase Black Blue Red Pen | eBay
Pentel Straight liquid back pressure whiteboard pen, mwl5m thick rod 6.0mm/mwl5s thin rod 4.0mm round pen head art supplies|Dry Erase Markers| - AliExpress
Pentel Maxiflo WhiteBoard Marker Bullet tip – Stationery Service
Whiteboard Marker Fine Chisel Tip Pentel Maxiflo Liquid Ink - Etsy