Extend the duration Knife Life: 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 an indispensable tool for any carpenter. High quality material: The scissor 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 nut design rotatable, which can adjust the angle of the blade. 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: clamping range inner size of our knife sharpening guide: 0-50 mm, 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 chisels. and helps extend the life of many chisels and woodworking irons. Specification: Colorblue Material: carbon steel Size: 100*41*35mm Inner clamping range: 0-50mm External clamping range: 36-86mm Package includes: 1*chisel sharpening guide