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Flex steel is the newest addition to the Walter flap disc line. It is a general purpose disc designed for use on steel in light industrial, metal fabrication and construction applications. Flex steel features a specially engineered Zirconia Alumina abrasive grain blend that self-sharpens with less pressure, allowing it to maintain a high removal rate on any power tool, including value models with less torque. Flex steel provides an economical solution for workers who need a quality, industrial grade flap disc to get the job done.