Case Knives 6505 Case Ruger Peanut Knife The Case Ruger (6220SS) Peanut Knife features clip and pen blades made of Tru-Sharp surgical steel. The Jigged Pitch Black Bone handle, 2 7/8" closed, has an exclusive Ruger shield and nickel silver bolsters. The Case Ruger Peanut Knife weighs 1.2 ounces. Each Case Ruger Knife is packaged in a gun metal Ruger logo gift tin. BRAND NEW IN THE BOX!