Tools4Boards hone FIVER provides a nice progression from coarse to fine grit for a smooth mirror finish. Included in the set: 1) hone 100 grit x-coarse may be used in place of a smooth (fine) finishing file. Perfect deburring stone for removing case hardening from edges Caused by hitting rocks or grinding machines and ideal for de-tuning shovel and tail. 2) hone 200 grit coarse is the perfect maintenance and deburring stone for sharp, smooth edges. Typically used as a second stone in progression from x-coarse to x-fine grit. 3) hone 400 grit medium is the perfect all round maintenance and polishing stone for sharp, smooth edges. Typically used as the third stone in progression from x-coarse to x-fine grit. 4) hone 800 grit fine is the perfect first stone for final polishing after edge bevel and sharpness have been established. Typically used as the forth stone in progression from x-coarse to x-fine grit. 5) hone 1000 grit x-fine is the perfect stone for establishing a mirror finish and ultimate edge smoothness through final polishing.