The Lyra Block Chalk No. 491 is a versatile writing and drawing tool that is ideal for various surfaces. With a square shape and dimensions of 30x30x100 mm, this unwrapped chalk allows for precise handling and is particularly suitable for materials such as metal, stone, concrete, cardboard, dry wood, and dry tires. The chalk is available in a convenient box of 100 pieces, making it an excellent choice for creative projects, construction work, or industrial applications. The white writing color ensures clear and highly visible markings, while the rounded tip allows for easy application. Made in Germany, the Block Chalk stands for quality and reliability. It is an essential tool for artists, craftsmen, and anyone who values precise and durable markings.