Angle Guide - By guiding the sharpening angle, you maintain the correct edge geometry and apply steady pressure for consistent, safe sharpening results. Durable and Practical - A professional blade grinder designed for daily use. It is practical and durable, capable of sharpening any knife or hand tool with a blade. White Corundum Material - Sharpening uses white corundum, which does not require expensive oil. Just water is enough to start sharpening. Easy to Use and Assemble - Two-sided sharpening stone with four grit sizes: 400 and 1000 on one side, 3000 and 8000 on the other. The set is easy to install and simple to use. Performance and Compatibility - Effective for a wide range of blades, delivering fast material removal and a fine finish. Suitable for kitchen knives, outdoor and utility blades, chisels, and other hand tools. Use Scenarios - Restore a dull kitchen knife for daily cooking tasks. - Maintain outdoor or hunting knives for camping and field use. - Sharpen chisels and woodworking tools for precise carving and planing. Key attributes - Function: Edge sharpening with guided angle control - Compatibility: Works with knives and various hand tools with blades - Material: White corundum sharpening stones - Grains: 400 / 1000 on one side, 3000 / 8000 on the other - Performance: Oil-free operation with water, easy setup, durable construction