Enhance the precision of your sharpening tools with the Mercer Culinary Diamond Flattening Stone, model M15957. This indispensable tool features a dual-grit design, with 220 grit on one side for refining and 360 grit on the other for more coarse grinding. Its unique mouse-shaped design is not only ergonomic but also incorporates a spirit level to ensure even flattening of your stones. Perfect for maintaining the effectiveness of your sharpening stones, this diamond flattening stone is a must-have for any serious chef or knife enthusiast. Its compact dimensions and robust construction make it a durable and practical addition to your culinary toolkit.