Product Description
The Tri-Angle Sharpmaker includes two sets of high alumina ceramic stones: A pair of medium-grit (brown) stones for aggressive sharpening and a set of fine (white) stones for professional-grade finishing. The stones are triangular for sharpening PlainEdges on the flat sides and SpyderEdges (serrations) on the corners. A furrow running the length of each stone lets you sharpen pointed items like fishhooks, darts, and awls. Included is a set of brass safety rods protecting the user's hands while sharpening.
WARNING:

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
www.P65Warnings.ca.gov