Byrd Duckfoot Diamond Sharpener. 6 7/8" overall. Measures 3" at the widest point. The sharpener is comprised of a steel form, in the shape of a duck's foot, that has been bonded with 600 mesh mono crystalline diamonds. The sides are elliptically shaped with a large radius for plain edges, and a small radius for serrated edges. There is a 1"x5" flat surface and three grooves that include a wide channel for de-burring, and a narrow channel for sharpening pointed objects. A 20 degree angle for sharpening knife blades is created when the Duckfoot is held vertically on a tabletop, and tilted to raise one edge off of the table; when laid horizontally, a 12.5 degree angle for scissors sharpening is created. A suede leather carry case that doubles as a non slip pad is included.