chalk ink pen

NEW REVOLUTION ON POWDER CHALK, WRITING ON THE BLACK BOARD/GREEN BOARD. The features of the Liquid Chalk Pen :1) The world first non-toxic Liquid Chalk Pen 2) No messy powder floating in the air or piling up on desks and chairs 3) Providing a cleaner and healthier environment 4) Goes on smoothly, can be read clearly and dry erased easily 5) Refill available 6) A longer life span (2 years min. ) 7) A variety of colors available (white, red, yellow and blue) 8) Decreased need for ventilation due to the lack of dust and powder in the air.