This is a direct replacement for the Norton IM-200 sharpening system. It is a Hard Arkansas stone. All Arkansas stones are graded on their hardness, the harder they are the finer the grit. Stone measures 8" x 2" x .5" in size.
Q. Is this Hard Arkansas stone made for the Norton IM-200 stone system?
A. Yes, it is a direct replacement for the Norton system.
Q. Is this made by Norton?
A. No, it is not made by Norton. It is made in Arkansas, USA.