Choice available check title, mentioned in brackets at the end of the title. Combination sharpening stones for sharpening knives, hatchets, gravers, or any thing else you can use the blocks on coarse side for rough spots, these sharpening stones are made from a synthetic abrasive material and are used in the same manner as a diamond or natural bench stone. The extra-coarse side of the stone (100 grit) is used for aggressive removal of metal and will sharpen a dull or damaged blade very quickly. The other side of the stone (240 grit) is for less aggressive removal of metal and should be used for sharpening somewhat dull blades that just need a quick touch-up or fine side for getting a sharp edge, less aggressive removal of metal and should be used for sharpening somewhat dull blades that just need a quick touch-up or for smoothing the cutting edge after sharpening on the extra-coarse side. It is excellent for use on pocket knives, sport knives, tactical knives, or other cutting tools. 6 inch long, 2 inch wide and 1 inch heighted package contain :- use for large or small blades, diy crafts combination sharpening stone for knives for diy crafts works - (6 x 2 x 1 inches)