Pentel Assorted Maxiflo Whiteboard Marker - Black (Pack of 4) - Walmart.com
Pentel Maxiflo Marker Large - Dartshopper.com
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 Permanent Marker, bullet point (Box of 12), Blue | KVG