The Norton 220/1000 Combo Grit is the stone for edge repair. The stone comes in a plastic case which acts as a portable sharpening station. 8” x 3” x 1”.
220 Grit - This is Norton's coarsest waterstone. It is used to repair large nicks, or to change the shape of a blade. Because it is so porous, it needs to have water splashed on its surface often.
1000 Grit - This stone cuts quickly to establish edge geometry. It's used to restore the edge to prepare it for the next stage in sharpening.