KurtzyTM 8 Pack Colour Liquid Chalk Marker Pen Set For Chalk Boards, Whiteboards, Windows, Labels LIQUID- Super concentrated liquid means no dripping or running for a professional, dust free, finish. 8 pens in bold colours. SURFACE- Wipe clean and use on any non-porous surface like glass, metal, plastic, whiteboards, chalkboards- anything you like! SAFE TO USE AND EASY CLEAN UP - Dust Free for Asthma & Allergy Sufferers. Non-Toxic & Great for Kids Age 3+, Water-Based, No Odor, Xylene Free, Eco friendly. JUMBO TIP- Pens have a 10x15mm tip so they are perfect for extra large projects- sign writing, attention grabbing posters, window displays. *100% No Quibble Money Back Guarantee. If For Any Reason You Are Not 100% Satisfied, Please Contact Us For A Fast No Questions Asked REFUND.