Chalk Markers -- Yukiss&reg; Vibrant Liquid Chalk Pens: 10 Pack with 6mm Reversible Tip + 4 Free Tips + 8 Free Chalk Labels (Super Chalk, Your Best Choice of Chalk Pen and Liquid Chalk Markers) YUKISS CHALK MARKERS ARE COMPLETELY VERSATILE - Great for using on Chalkboard Labels, Menu Boards, Bistro Boards, Whiteboards, Chalkboard Stickers, Chalkboard Contact Paper, Led Boards, Glass, Metal, Car Windows and Any Non-Porous Surfaces. VIBRANT NEON COLORS THAT ARE MUCH MORE VIBRANT THAN REGULAR CHALKS - Non Toxic. Use High-Quality Chalk Inks to Ensure the Brilliant, Vibrant Colors in Using. Also, Easy to Clean. PERFECT FOR CHILDREN - 6mm Reversible Bullet/Chisel Fine Tip Makes it Easy for Kids to do both Fine and Bold Works! Offers you more Drawing Option for Fun Activities: Decorations, Drawings, Games,etc. ALSO GREAT FOR ADULTS - These Chalk Pens are great Creating "Works of Art" With Color Blending. Writing Notes and Attracting Attention in Bistro, Restaurant, Home and Office. For teachers, the Bright Neon Colors also Make for Great Visible Explanations and Keeping Students Attention! EASY TO WIPE OFF after dry WITH A WET CLOTH OR WET PAPER. (*** NOT SUITABLE FOR POROUS SURFACES ALWAYS TEST/CHECK BEFORE USE !***)