The Pica Big Dry Permanent Lead Refill 12pc Set Assorted Colors is a set of high-quality, refill leads designed for use with the Pica Big Dry Automatic Pen. The set includes 12 pieces of lead in various vibrant colors, providing versatility for marking and drawing on a range of surfaces, including wood, metal, plastic, and stone. The permanent lead ensures that your markings are durable and resistant to fading, making it ideal for construction, carpentry, and other professional applications. The leads are designed to be long-lasting and are compatible with the Pica Big Dry pen, offering a smooth and consistent marking experience.