Personalise your chalkboards with the Uni-ball Liquid Chalk Marker Pens, an easy and professional-looking alternative to traditional chalk. The markers produce dense, vibrant writing lines and colour for decorating chalkboards, windows, metals, plastics and other non-porous surfacesIdeal for outdoor signs and blackboards, liquid chalk is rain-resistant but can be easily wiped away using a damp cloth or mild detergent. Enjoy easy application as you create decorative displays and custom signage with these colourful pens. The pen design gives you better control as you write with the chalk.1.8 to 2.5mm bullet tipFour packOdour, solvent and alcohol free inkWrites on non-porous surfacesGreat for chalkboards, windows, metals, plastics and moreUni-ball PWE-5M Liquid Chalk Marker Pens 4 Pack