This Staedtler Mechanical Pencil Lead is of 0.5mm size and has a 2B lead grade, making it perfect for precise and dark markings. Made by a well-known brand in the industry, these leads are break-resistant and provide consistent line width for smooth writing and drawing. Its high-quality construction ensures a comfortable and enjoyable writing experience. With easy-to-advance lead, these mechanical pencils are an ideal choice for everyday use at home, school, or office. The perfect combination of precision and durability, these leads are a must-have for any writing or drawing project.