The Spyderco Golden Stone is shaped like a duck's foot in order to offer one of the most versatile sharpening tools available. The duckfoot style allows you to position the stone vertically(foot-side down on a table top) to create a 20° sharpening angle (40° total angle) for blades. Each long side of the stone has an elliptical edge with a large radius for sharpening plain edge blades and small radius to tackle serrations. Setting the duckfoot on it's side creates a 12.5° angle for scissors. You may also utilize the groove running down the stone for sharpening pointed tools. Includes a suede carry case that can be used for stropping as well as a pad to keep the stone from sliding while sharpening.