Blackboard Chalk (Writing board, chalk board) Moderate friction, easy to write and wipe off Non-reflective, Moisture-proof, Blackboard Chalk (Writing board, chalk board)Modle No.: CC-1003Dimension: 120X400CM,120X360CM,120X300CM,120X240CMColor: Green or White, Choose FreelyMaterial:-Surface: Dark green magnetic steel board. POSCO (Import from Korea) and the MIZTECH (From China mainland) board ...