Exterior: Factory New The most notable feature of a gut knife is the gut hook on the spine of the blade. Originally popularized as an aid for field dressing game, the gut hook is also effective atcutting through fibrous materials like rope, webbing, or safety belts with ease. It has been painted with black and silver metallic paints using a marbleizing medium, then candy coated in three colors. The blade is made of many colors, but soon it all looks red