Liquid Chalk Markers 8 Beautiful Brilliant Rich Fluorescent Colors  For LED Drawing Boards - Glass - Whiteboard  100% Dust Free Premium Quality Reversible 6mm Tip  Attention-grabbing and Fun Smooth, Rich Fluorescent Colors are Water-Based, Non-Toxic & Fade-Resistant Fluorescent Chalk Produces Eye-Catching Display Art on LED Drawing Boards Concentrated Liquid Chalk is 100% Dust Free and Prevents Running & Dripping Liquid Chalk is NOT Formulated for Use on Porous Surfaces, Including Chalkboards Markers are Suited for Writing on all Non-Porous Surfaces Including Glass & Metal