Twoinone sharpening stone with two grit sides for a simple, effective sharpening routine. The coarse 400 grit side handles rapid reshaping, while the fine 1000 grit side provides precise finishing. Coarse grinding capability 400 grit side is ideal for fast repairs on dull or chipped blades. Quickly restores edge performance so you can continue cooking without unnecessary downtime. Precise finishing for longevity 1000 grit side refines the edge with a careful finish. Helps minimize wear on the blade, keeping your knives sharp longer with regular maintenance. Key benefits Versatile twostep tool: switch between rough reshaping and fine finishing in one stone. Improves kitchen efficiency by restoring sharpness quickly. Supports blade longevity through regular, careful maintenance. Compatible with standard kitchen knives for everyday use. Use scenarios Everyday chef knife: run the 400 grit side to restore a dull edge after a heavy chopping session, then finish with the 1000 grit side for a clean cut. Paring and utility knives: remove burrs and rebalance the edge with the 400 grit side, then refine with 1000 grit for precise slicing. Routine kitchen maintenance: schedule regular sharpening to keep all knives performing at their without needing multiple tools.