Features:These fluorescent colored markers are liquid chalk markers that can be used on glass, plastic, and other hard surfaces such as on dry-erase boards, specialty fluorescent marker boards, windows and more!Great for making colorful menu board displays!Works similar to other dry-erase markers, but is more fluid when being used and dries into bright colors that glow when backlit by a light source (such as when used with a Flashing LED Board).Easy to clean with tissue paper or a damp cloth.Specifications:6 Colors per set: Blue, Green, Yellow, White, Pink, OrangeWeight: 190g / each setSize: 0.18 inch wide strokesHow to use:Shake well with cap on and remove cap in up-right position.Press down tip for a few seconds until tip fills with ink.Recap tightly after use and store in horizontal position.Note: Please do not touch ink to your mouth, nose or eyes; keep away from children