The Victorinox 4.3391.5 replacement sharpening stone is the perfect upgrade for your Victorinox 40097 sharpening system. Crafted from crysolon-grade silicon carbide, this stone delivers a coarse grit that effectively restores dull or damaged knives, ensuring restaurant-grade sharpness. Its flat-cut design promotes consistent blade contact, making it a reliable choice for maintaining high-performance knives in professional kitchens. The dark industrial finish and durable construction not only enhance its appearance but also its longevity, making it a smart investment for chefs and kitchen staff. With dimensions of 11 1/2 inches wide by 2 1/2 inches high by 1/2 inch deep, this stone provides ample surface coverage for efficient sharpening, reducing downtime and improving workflow efficiency. Whether you're dealing with high-volume kitchen operations or need to maintain a variety of knife sets, this Victorinox sharpening stone is a must-have for any commercial kitchen.