The ultimate tool in blade sharpening technology the Lansky 5 Stone Professional System is designed to enhance blade durability while sharpening. This easy to use system allows for precision blade honing at various grit levels ranging from coarse to ultra fine. Each honing level can be achieved via a corresponding sharpening stone. Each stone functions at a different angle to sharpen everything from a heavy-duty box cutter to a scalpel or X-Acto knife. The Lansky Controlled Angle Sharpening System includes a guide rod for each stone and operates on a multi-angle flip-over knife clamp for safe secure honing. For a professional blade with long-lasting durability and superior sharpness Lansky ensures the same edge every time.