Description: Precision and Adjustable: This woodworking Honing Guide features a 3 mode angle adjustable system, allowing you to adjust the sharpening angle according to your needs. It comes with an angle ruler plate for accurate adjustment of the planer blade sharpening angle. Simply select the corresponding hole position, adjust the fixed blade angle, remove the angle ruler plate, and then grind for more precision.Efficient and Convenient: The Sharpening Jig is designed with efficiency and convenience in mind It features a widened roller for continuous grinding, a sturdy base for stability during use, and an easy to use hand tightening adjustment system.Eccentric Roller Adjustment: The eccentric roller can be finely adjusted to achieve ideal micro angles degrees. Simply pull out and rotate the side knob of the roller, and alignment it with the buckle on the chuck to easily achieve fine adjustments of micro angles.Centering Assistance: The main panel of this Sharpener Jig is marked with scale that can help you center your planer blade during adjustment.Product Specifications : Clamping thickness 12mm, clamping width 73mm. Specification: Material: Metal Color: Black Size Chart: Honing Guide Length?9.5cm/3.74inch Angle Scale Ruler?10.1cmx4.5cm/3.98inchx1.77inch Package Includes: 1?Honing Guide Tool 1?Angle Scale Ruler? Note: Please allow slightly errors due to manual measurement and different monitors.