ITEM NAME:Dmd,Snowboard Edge Polishing Tuning Equipment Ski Diamond Files Whetstone P E6D7 Dmd,Snowboard Edge Polishing Tuning Equipment Ski Diamond Files Whetstone P E6D7 High Quality, Long lasting Diamond Ski and Snowboard Diamond Files†240/360/500/1000 Grit 240 Grit(Black)Coarse:Use for removing extra edge from rock damage. If your file can not cut the edge, use this stone...it's like magic! 360 Grit(Blue)Middle Coarse:Use for deburring steel edges on skis and snowboards or for addressing minor rock damage. 500 Grit(Pink)Fine:A must have diamond to maintain a smooth and sharp edge. Starts to bring out that high polish shine. 1000 Grit(Green)extra Fine:Final diamond polishing . Extremely exact edge accuracy. Used on alpine skis to achieve that super smooth finishing Diamond files plate have a unique diamond pattern and high diamond count, the benifits are longer lasting, durable stones with amazing cutting and polishing characteristics. The diamond sheet is attached to an plastic backing plate for a high degree of flatness and resistance to flex. All Diamond files plate measure 70mm in length. Pocket size can quick edge repair anywhere. Sharpens your ski edge and knives faster than conventional stones whth 's monocrystalline diamond serface. No oil is needed sharpen dry or with water. The advantage of use diamond stone: Remove the excess burr from the base This is a tool that can be use for a day to day sharpening of your ski or your snowboard. It is a safe tool because it doesn't remove a lot of metal so it doesn't change the base shape. colour:Black/blue/pink/green Material:Diamond size:70*25mm Package Contents: 4 * Sharpening slate