Expo® Low Odor Dry Erase Markers. Includes twelve vibrant colors including 2 markers in red, blue, green and black. Each marker features a chisel-shaped tip for comfortably easy writing. For use on whiteboards, glass and most non-porous surfaces. Safe and non-toxic. Conforms to ASTM D-4236. Plastic. Pack of 16. 4 3/4"