Question: what are chalk marker pens?
Answer: Fine Tip Chalk Pens - Pack of 10 colour markers - Use on Chalkboard, Whiteboard, Window, Blackboard - 3mm Reversible nib. USE ONLY ON NON POROUS SURFACES - Porous Surfaces will absorb ink and leave ghosting. ... Our markers have water based ink which can be easily erased using a wet wipe cloth.