Versatile colour palette - 12 pieces in 12 vibrant colours, ideal for creativity and marking. Packed neatly and break-proof in a practical drawer box. Clean and dust-free writing - Low dust generation for pleasant writing indoors and outdoors, perfect for blackboards, walls or streets. Safe and washable - Certified and easily washable, ideal for children and adults as a chalk pencil for school or as street chalk. Handy and easy to grip - Each piece is 8.5 cm long and has an ergonomic diameter of 1.2 cm for easy handling and fatigue-free writing. Quality since 1872 - The Westcott brand has stood for household and office products with an unmistakable design and unrivalled value for money for 140 years.