Fangrui Product Details Adjust The Grinding Angle Of The Planer Blade:select The Corresponding Angle Hole Position, Adjust The Fixed Blade Angle, Remove The Angle Ruler Plate, And Then Polish For More Accurate Polishing Rotate The Hand Screw Nut To Adjust The Clamp And Fix The Planer Blade:by Adjusting The Knob To Control The Upper And Lower Sides Of The Sharpening Guide Clamp, As Well As The Height Of The Opening, The Fixed Planer Blade Can Be Adjusted Eccentric Roller Can Be Fine Tuned:to The Ideal Mini Angle Angle Pull Out And Turn The Knob On The Side Of The Roller, And The.corresponding Buckle Of The Buckle Can Easily Achieve Slight Delay And Angle.scale Markings Can Help Center The Planer Blade:the Scale On The Main Panel Of The Sharpening Guide Can Help Adjust The Center Of The Planing Blade Widening The Roller Design To Stabilize The Base And Prevent Grinding From Shaking:widening The Roller Provides A Stable Base For The Guide, Ensuring Stable Sharpening Without Shaking Please Note: The Physical Slightly Color Differe