Features:

Portable 4pcs Sharpening stone set, great for Remove the excess burr from the ski base, use for a day to day sharpening of your ski or your snowboard.

240 Grit(Black): Use for removing case hardening from rock damage.

360 Grit(Blue): Use for deburring steel sides on skis and snowboards or for addressing minor rock damage.

500 Grit(Pink): A must have diamond to maintain a smooth and sharp edge; starts to bring out that high polish shine.

1000 Grit(Green): Final diamond polish when looking for that mirror finish; extremely exact edge accuracy; used on alpine and snowboard skis to achieve that super smooth finish.