Work Sharp Benchtop Whetstone is a water-based sharpening stone with two gradation steps, angled, for knives and thin-edged tools. The 1000 and 6000 grit sharpening stones provide incredibly sharp edges. The sharpening base provides a stable platform and better water control for less clutter and faster cleaning. The angle guides provide precision to hold the edge, making sharpening faster and easier. The sharpening guides are interchangeable 15 ° or 17 ° and optional to use.