F150 Extra Coarse Diamond Plate For Roughing Of The Edge/Forming The Shape Of The Blade.

F220 Coarse Diamond Plate For Forming Of The Cutting Edge.

F400 Medium Diamond Plate For Main Sharpening Operations/Creating Of The Aggressive/Biting Cut.

F600 Fine Diamond Plate  For Pre-Finishing Of The Cutting Edge/Removing Of Noticeable Marks.

F1000Very Fine Diamond Plate  For Finishing Of The Cutting Edge.