The Work Sharp Outdoor Knife Sharpener Overlay is an additional guide for the WSKTS sharpener that allows knives and tools to be sharpened at a 20° angle.
The outer overlay, unlike the factory version, allows sharpening at a 20° angle(per side), creating a finer but more precise cutting edge.
The overlay also has guides for sharpening scissors (60°) and serrated cutting edges.