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The Brush Research BC23424 FLEX-HONE is a 2.75" diameter, 240 grit silicon carbide honing tool designed for mild steel, stainless steel, cast iron, and softer ferrous materials. Its oversized, self-centering design ensures optimal pressure and wear compensation, delivering a precise plateau finish that improves oil retention and seal life. Ideal for automotive, hydraulic, and pneumatic cylinder refinishing, it also deburrs crossholes in a single operation. Made in the USA by the original inventors, this tool combines quality, versatility, and efficiency for professional-grade surface finishing.







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