Fits Lie-Nielsen Rabbet Block Plane, Skew Block Planes, and Low Angle Jack Rabbet Plane. It also fits the older version of the Lie-Nielsen No. 10-1/4 Bench Rabbet Plane (pre-2023).
The circular nicker, made of A2 Steel, protrudes by .010″ and can be rotated to expose the edge as needed. Retract by rotating so the flat is at the bottom. Hone the flat on a fine waterstone to sharpen.
