100- Deburring and sharpening diamond stone. Works great for removing case hardening in the tip and tail from grinding stone entry and exit of the ski at the manufacturing facility, and from hitting rocks.
200- For deburring steel edges on skis and snowboards and rock damage removal.
400- 2nd in your must have diamonds to maintain a smooth and sharp edge. Starts to bring out that high polish shine.
600- For final steel edge polishing on skis and snowboards.
1000- Final diamond polish when looking for that mirror finish. Extremely exact edge accuracy. Used on alpine skis to achieve that super smooth finish.