The Edding 8881 deep hole graphic refill leads are the perfect companion for the Edding deep hole construction pencil, designed for precise marking on both rough and smooth surfaces commonly found on construction sites. Whether you’re marking wood, plastic, metal, cardboard, or tiles, these refill leads ensure clear, accurate lines every time. This set comes with graphite refills for easily removable marks on smooth surfaces. Their easy-to-replace design makes them a durable and environmentally friendly choice for professionals.