This Case Cutlery CS Pen Pocket Knife 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. Something all Pen knives have in common is two blades on opposing ends. The Clip blade 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 envelopes and boxes. This folding pocket knife is constructed with our Carbon Steel (CS). Some knife lovers will settle for nothing less than Carbon blades. Case Carbon blades are known for their edge-holding ability and easy re-sharpening. However, they are less resistant to rusting, pitting, and discoloration than stainless steel. We recommend keeping a thin film of oil on the blades to maintain the finish. This ensures that your pocket utility 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.