Acrylic Paint Markers vs. Permanent and Chalk Markers - Chalkola - Chalkola Art Supply
Pentel Glass Marker SMW26/4
Pentel Chalk Marker Pack of 4 Chisel Tip Assorted Colours
8 x Pentel Wet Erase Chalk Marker Pen – Medium Chisel Tip - 1 of Each Colour | eBay
Extra Fine Tip White Chalk Pens (4 Pack 1mm Nib) - White Dry Erase Chalk Ink Markers for Blackboard, Chalkboard, Windows, Signs, Glass - Water Based, Non-Toxic, Wet Wipe Erasable : Amazon.co.uk: