This Medium Jack is a part of our Working Knives collection. hThe knife features two blades, clip and pen blades. 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. The knife is made with Case Tru-Sharp stainless steel blades and a smooth black synthetic handle. Made in Bradford, PA, USA from domestic and imported materials.