The chisel sharpener is made of durable cast aluminum. Totally coated with anti-rust paint, not easy to rust, durable and long-lasting. By rotating the screw cap to adjust the clamping width, the sharpening guide fits scissors from 6mm to 50mm width and flat irons from 36mm to 80mm width. The sharpening angles can be precisely adjusted using the sharpening jig by adjusting the projection of the tool. If chisel projection 30 mm for 30 and 40 mm for 25 angles, plane projection of 38 mm for 30 and 50 mm for 25 angles. The design of the replacement of the ordinary steel wheel by a bearing wheel, using more smoothly. The sharpening guide can precisely sharpen the edge of your tools due to the careful processing of the working face. Curved design to fit a variety of types of woodworking chisels. The sharpening guide can be used for wood chisel, planer, blade, chisel, carving knife, iron, flat chisel, edge sharpening. And the use works easily on oil stones and water stones. Note: The data are all measured manually, please allow 1-3cm error due to difference in light and temperature. display, there may be some color differences, please refer to the actual item received.