The chisel sharpener is made of durable cast aluminum. Completely coated with rust-resistant paint, it is not easy to rust, ensuring durability and longevity. By turning the screw cap to adjust the clamping width, the sharpening guide accommodates chisels from 3mm to 47mm wide and flat bars from 34mm to 79mm wide. Sharpening angles can be precisely set using the sharpening jig by adjusting the tool projection. A 30mm projection is used for 30° angles and a 40mm projection for 25° angles; a 38mm projection is used for 30° angles and a 50mm projection for 25° angles. The design replaces the ordinary steel wheel with a bearing wheel for smoother operation. The sharpening guide can precisely sharpen the edge of your tools thanks to the meticulous treatment of the working face. Its curved design accommodates a variety of wood chisel types. The sharpening guide can be used for wood chisels, planers, blades, burins, carving knives, irons, flat chisels, and edge sharpening. It also works easily on oilstones and waterstones.