[Extend Tool Life]: If the plane or engraving knife is no longer sharp after a long period of use, you can dispose of it and replace it with a new one. Sharpening guides make the blades sharper than before and extend tool life [High quality and durable material]: The chisel sharpener is made of high quality carbon steel. Not easy to rust, durable. With hardened steel rollers on the underside, it does not wear out over time and there are no flat spots [Size and Compatibility]: The chisel guide tool can adjust its reach by turning the nut. Reach range: 0.16-3.35 inch / 8-85mm. The maximum clamping width of the chisel is 85mm and the maximum clamping width of the chisel is 58mm. Contains flat jaws for securing insert chisels and slotted jaws for holding paring chisels and planing knives [Select the right angle]: By turning the nut, you can adjust the angle of the saw blade, sharpen the saw blade as needed and finally slide the saw blade back and forth on whetstone until the saw blade is