You've got a blackboard or a glossy surface and you need to write on it without a cloud of chalk dust landing on the desk below. This is the marker that handles both. Texta's liquid chalk ink goes down clean on porous boards, non-glossy blackboards, and glossy surfaces alike. When you're done, a damp wipe and water take it right off. No eraser. No smearing. Four bullet tips in one wallet, so you've got your line weights sorted for notes, diagrams, or a quick whiteboard-adjacent sketch. Grabs it off the shelf when you need it, not three weeks later