This Pen is a part of the Yellow Synthetic Family. The distinctive yellow handle brightens this family while maintaining its toughness, making it one of the most beloved in the Case line. Some have rounded bolsters, others square, but all Pen knives have in common two blades on opposing ends. Varying in length from 25/8" to 3-3/8" closed, you can pick the one that best suits you. The Clip blade which sits on the pocket end while the Pen blade sits on the cap end. The Clip blade is commonly used as a multi-purpose blade and preferred for detail work. The Pen blade is great for small detailed uses, especially for everyday use such as opening envelops and boxes. This knife is constructed with our Carbon Steel (CS). We recommend keeping a thin film of oil on the blade to maintain the finish. This ensures that your knife will be around for future generations to enjoy. Comes conveniently packaged in a box. Made in Bradford, PA, USA from domestic and imported materials.