The Pica Marking Chalk Pro in Yellow is a professional marking chalk designed for precise and durable markings on various surfaces. This set includes 12 individual chalk sticks, each approximately 9 cm long and 1.5 cm in diameter, with a total weight of about 180 g. The chalk formulation produces highly visible yellow markings that are smudge-proof and resistant to environmental influences such as light moisture, making them suitable for both indoor and outdoor applications. Ideal for construction, carpentry, metalworking, textile work, and sports field markings, these chalk sticks offer excellent coverage on dark surfaces like wood, metal, concrete, asphalt, and fabric. The ergonomic hexagonal shape prevents rolling and allows for comfortable handling during extended use. The chalk composition enables sharp, clean lines with minimal dust production, and markings can be easily removed with a damp cloth or brush if needed. The product is manufactured according to consistent quality standards, ensuring uniform dimensions and color intensity across all 12 pieces. The packaging is designed for convenient storage and transport, protecting the chalk from breakage. This professional marking tool is valued for its reliability in creating temporary guidelines, measurement marks, and labeling symbols across various trades and activities.