Native Spring White Liquid Chalk Marker Pens 4.5mm Reversible Tip 4-Pack Choose your tip! You can choose either bullet or chisel depending on the creative results you need. Write on to any non-porous surface from glass, labels, mirrors or metal smooth and easy. This product is dust free, non-toxic, and has water based ink which is very safe for kids to use. Approved for all kids ages 3 plus! Use this product for labeling your kitchen jars, chalkboard, vases, pots, containers, etc. Cleans up very easily! Just wipe clean with a damp cloth. Please see below for our Special offers!