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FLEX-HONE GBD40032 4" Silicon Carbide Hone (320 grit)

Flex-Hone ★ 3.6/5 · ItemOracle Score Premium

$115 USD
Price subject to change
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Brush Research GBD40032 FLEX-HONE, 4" (102mm) Diameter, 320 Grit, Silicon Carbide, for Mild Steel, Stainless Steel Cast Iron and Softer Ferrous Materials

The FLEX-HONE GBD40032 is a 4" silicon carbide abrasive brush designed to create a crosshatch finish and center-aligns in the bore. Customers note easy use, minimal gouging, and quality build for engine rebuilds

Highlights

  • engineer-friendly oversized design
  • crosshatch finishing benefits
  • USA-made quality

Pros

  • Self-centering, self-aligning design
  • Wide grit variety for finishing tolerances
  • Produces crosshatch finish
  • Quality USA-made

Cons

  • Single grit option noted (320 grit) in data
  • End-user reviews reference specific engines; applicability may vary

Best For

  • rebuilding hydraulic cylinders
  • engine and brake cylinder finishing
  • valve guides finishing
  • stainless steel and cast iron finishing
  • soft ferrous material finishing

Features

  • Made in USA with consistent quality from tool inventors and makers
  • Oversized design provides self-centering, self-aligning, and wear compensation
  • Available in various grits for precise finishing tolerances and crosshatch patterns
  • Suitable for rebuilding hydraulic, pneumatic, engine, brake cylinders, valve guides, pumps, and compressors
  • Capable of finishing and deburring in a single setup on rotating spindles from hand drills, drill presses, or CNC equipment

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