These chalk board markers will erase off non-porous surfaces such as glass & mirrors (dry & wet erase) & permanent on porous surfaces (like wood).
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
Visibly Chalk Chick Wet Erase Markers, 8 Extra Fine Tip Dry Erase Pens, Multiple Colors for Acrylic/White Boards, Made With Chalk Ink (Floral) - Yahoo Shopping
American Metalcraft BLSMAMIXV5WT Securit All-Purpose Multi Tip White Chalk Marker Set - 5/Pack
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
Quefe 12pcs Liquid Chalk Markers Assorted Colors, 6mm Chalkboard Markers Dry Erase Marker Pens with White and Rainbow Colors Reversible Tips and Chalk Labels for Chalkboard Signs Blackboard Home Shops - Yahoo
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
Extra Fine Tip White Chalk Markers (4 Pack 1mm Point) Chalk Pens - White Dry Erase Marker Pen for Blackboard, Chalkboards, Windows, Glass, Bistro, Signs
Funcils White Chalk Markers - Variety pack of 6 - (2x) 1mm Extra Fine, 3mm Fine & 6mm Bold Tip | Wet Wipe Erasable Liquid Chalk Pens for Chalkboard,
Funcils White Chalk Markers for Chalkboard Signs, Blackboard, Window, Labels, Bistro, Glass, Cars - Variety Pack of 6 - (2x) 1mm Extra Fine, 3mm Fine
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
White Chalk Markers - Variety Pack of 6 Fine and Bold Tip (3mm and 6 - Chalkola Art Supply
Funcils 10 Extra Fine Tip Chalk Markers for Chalkboard Signs, Blackboard, Window, Labels, Bistro, Glass, Car (10 Pack, 1mm) - Wet Wipe Erasable Ink Chalk Board Markers, Liquid Chalk Pens
Visibly Chalk Chick Wet Erase Markers, 8 Extra Fine Tip Dry Erase Pens, Multiple Colors for Acrylic/White Boards, Made With Chalk Ink (Floral) - Yahoo Shopping