Black Knife

 Folding Pocket Knife (also known as EDC knife, tactical knife, or hunting knife depending on its specific features and intended use). 

 It has a black blade, a black handle with a textured grip, and a thumb hole or flipper for opening. 

Common materials used for such knives include stainless steel (e.g., 5Cr15, D2) for the blade and various materials like aluminum, G10, or Micarta for the handle.