Hign-concerned Chemical : None : Mainland ChinaWriting Medium : whiteboardName: Erasable Dust Free Liquid Chalk PenMaterial: PlasticWeight: 10g/PCSize: As the picture showWriting Colors: Red, Blue, Black, White, Yellow, Orange, Green, Rose Red, PurpleFeatures:1.9 Vibrant Whiteboard Pens:Whiteboard Markers come with 9 variety of colors choices, the different colors are suitable for highlighting or arranging priorities, our fine whiteboard pens are great for kids and adults for school, kitchen, home office, meeting whiteboards, students teacher supplies, nice whiteboard accessories.2.Dry Wipe Markers:The whiteboard pens fine tip made with high pigment ink, xylene and toluene-free, low-odor, fast drying and residue-free, wipeable from white board and smooth surfaces such as glass, metal, plastic, ceramic tiles and porcelain. 1-2mm high-quality thin felt tip pen set offers you a comfortable and smooth writing experience, not blurring, magnetic dry erase marker pens are very popular with childrens and adults.3.White Board Colour Pens and Eraser:Whiteboard marker pens can be used on whiteboards, glass and most other smooth surfaces, fine point whiteboard pens offers great flexibility.4.Nice Gift Idea:Whiteboard pens magnetic are suitable for various occasions like home, office, school etc. Wipe board pens, chalk pens are perfect gifts for family - children, son, daughter, wife, husband and friends who love handwriting, like birthday, easter, halloween, thanksgiving, anniversary, back to school, etc.Notes:1.Transition: 1cm=10mm=0.39inch2.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:3PCS x Erasable Dust Free Liquid Chalk Pen