... toxic ink,pass CE,RoHS,ASTM certification this marker can be good to write on your board, ... and ASTM certificationgood your fine writting and safe for chilren.sizes: we have many MINI and large ... sizes for your choicescasing colors: black,white,red,blue, ... black.red,blue,purple,yellow etc.thanks for your visiting our item,pls contact us for prices! mini whiteboard marker pen