DUAL GRIT: Coarse side of this combination whetstone is used to sharpen badly worn, nicked or very dull edges quickly. Fine side is used to touch-up or dressed edge. Help to keep a keen edge while working firewood or doing camping chores. Dual Grit Multi-Purpose Axe Sharpener& Hatchet Sharpening Stone Grinding Tool, Extra Coarse/Middle Fine - 6000 Grits & 1000 Grits on Each Side. (White &Blue) EASY TO USE: Hold the stone firmly in your hand without exposing any fingers around the sharpening edge. Use either small circular motion or sweeping motions along the length of blade while counting the number used. Work on one side of tools edge before moving to the other side. VERSATILE: This multipurpose sharpening stone can be used for lawnmower blade, machete, axe, hatchet, knife, tomahawk, shovel , chisels, scythes, spade and etc. PERFECT MATCH:Our Sharpening Stone are light and portable, easy to carry.（Dimensions: 3.15 x 3.15 x 1.2 inches）.You can put it in a backpack, which is suitable for throwing axe, jungle survival, chopping wood, and logging.