The Faithfull 3 Square Second Cut File with Handle is sometimes also known as a triangular file. This file has three flat sides and is used to file in acute internal angles, as well as clean cut square corners, enlarge and clean up angular holes, and sharpen serrated jaws and saw teeth. This file is fitted with a comfortable plastic grip and is ideal for professional and frequent DIY use.
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3 flat sides
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Also known as a triangular file
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Comfortable handle
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Multipurpose