Prolong the life of the knife: After a long time of use, is your planer or engraving knife no longer sharp? Our sharpening tool can quickly and easily make the blade as sharp as before and extend the life of the tool. It is a must-have tool for any carpenter. High Quality Material: The chisel sharpener is made of high quality carbon steel, which is not easy to rust and is durable. Can be widely used in scissors, flat shovel, planing iron, gravel, etc. Intimate design: Our knife sharpener adopts rotary nut design, which can adjust the blade angle. Sharpen the blade as needed and finally slide the blade back and forth on the sharpening stone to make the blade more precise. Adjustable Width: Inner clamping range of our sharpening guide knife size: 0-50mm, external clamping range: 36-86mm. Applicable to blades of different widths. Wide Application: The wood chisel guide is suitable for grinding the cutting edges of wood chisels, planers, blades, engraving machines, engraving knives, flat irons and flat scissors. and helps extend the life of many woodworking chisels and irons.