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🔩 Elevate your cylinder finish game — flawless, fast, and future-ready!
The Brush Research GBD40024 FLEX-HONE® is a 4-inch diameter, 240 grit silicon carbide honing tool designed for mild steel, stainless steel, cast iron, and softer ferrous materials. Engineered with an oversized, self-centering design, it delivers a precise plateau finish with an oil-retentive crosshatch pattern, ideal for hydraulic, pneumatic, and engine cylinders. This versatile tool combines finishing and deburring in one step, enhancing seal life and performance, and is proudly made in the USA by the original FLEX-HONE® inventors.

















| ASIN | B002XUL1M6 |
| Best Sellers Rank | #23,720 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Flex Hones |
| Brand Name | Flex-Hone |
| Bristle Type | Abrasive Globule Bonded To Flexible Nylon Filament |
| Color | Grey |
| Compatible Material | Cast Iron, Mild Steel, Other Softer Ferrous Materials, Stainless Steel |
| Customer Reviews | 4.7 4.7 out of 5 stars (778) |
| Grit Material Type | Silicon Carbide |
| Grit Number | 240 |
| Grit Type | 240 |
| Included Components | GBD 4" (101MM) 240SC FLEX-HONE |
| Item Diameter | 4 inches |
| Item Dimensions | 13.9 x 5.1 x 5.1 inches |
| Item Type Name | Brush Research GBD40024 FLEX-HONE®, 4" (101mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel Cast Iron and Softer Ferrous Materials |
| Item Weight | 1.1 pounds |
| Manufacturer | Brush Research Manufacturing |
| Material Type | Silicon Carbide |
| Model | GBD40024 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Part Number | GBD40024 |
| Recommended Uses For Product | [Deburring, Finishing] |
| UPC | 843469149831 |
| Unit Count | 1 Count |
| Warranty Description | Manufacturer Warranty |
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