The adjusting knob determines the bend in the guide's body and the angle of sharpening at the tool's front edge. Angles can be set with the printed scale, a protractor or by eye. Spring tensioned clamp holds tools up to 2-5/8" wide. Two-wheeled rear roller moves in a straight line during use and will not wander sideways like other guides. Lightweight sharpener is made of high-impact Lexan.
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