Two sided sharpening stone with mixed mesh and grooves One side 400 fine mesh for precise sharpening and edge refinement; the opposite side 180 coarse mesh for rapid material removal. Side A has grooves; the other side features 2V grooves to greatly prolong the life of the grinding hook. Two grinding surfaces with different thicknesses meet the needs of different stages of knives sharpening and hook grinding. Made from quality materials with careful workmanship for long service life. Use scenarios Fishing hooks: use the 2V groove side to align and sharpen hooks, then switch to the coarse or fine surface as needed for shaping and finishing. Kitchen and pocket knives: finish and polish edges with the 400 mesh side for a sharp, refined edge. Small tools and hooks: leverage the coarse 180 mesh surface for rapid bevel thinning or reshaping, with the thicker or thinner surface as required for the task. Benefits at a glance Versatile twosurface design supports multiple sharpening stages without swapping tools. Groove configuration reduces clogging and extends tool life during hook grinding. Different surface thicknesses accommodate various blade shapes and hook sizes. Durable construction and precise workmanship for reliable, longterm use.