An automotive workshop in Mumbai needs to deglaze aluminum engine cylinders efficiently.
Using the flex-hone, they achieve a smooth cross hatch finish, reducing rework and improving seal life, saving costs on repairs.
You save 10,550 (31%)
Estimated doorstep delivery by 21 Nov - 23 Nov from USA






High-Quality Honing at Competitive Price
Flex-Hone 4-1/8" (105mm) diameter, 320 grit aluminum oxide abrasive. Designed for deglazing and finishing aluminum, brass, bronze cylinders. Self-centering, with rapid ring seating, it creates a cross hatch pattern and true plateau finish, improving oil control and seal life.
Manufactured by Brush Research, this tool is engineered oversized for optimal pressure, self-aligning, and suitable for use with hand drills, CNC, or drill presses. Its abrasive globules bonded to flexible nylon filaments ensure consistent results across various applications including automotive, hydraulic, and pneumatic cylinders, as well as deburring cross drilled holes and edge blending.
Imported from the USA, it arrives factory-sealed, with all duties included, and is ideal for professional workshops and automotive repair shops in India seeking reliable, high-quality honing tools.
Superior Finish & Rapid Ring Seating
Brush Research's FLEX-HONE® uses abrasive globules bonded to nylon filaments, producing a consistent cross hatch pattern that enhances oil retention and seal performance. Its self-aligning design ensures uniform results, reducing machining time and improving cylinder longevity.
Ideal for Automotive & Hydraulic Applications
Designed for deglazing and finishing cylinders, valve guides, and brake components, it accelerates ring seating and improves seal life. Skip if working on ferrous metals requiring higher grit or different abrasive types.
Typical situations where Flex-Hone 4-1/8" (105mm) Diameter helps — illustrative scenarios, not customer reviews.
An automotive workshop in Mumbai needs to deglaze aluminum engine cylinders efficiently.
Using the flex-hone, they achieve a smooth cross hatch finish, reducing rework and improving seal life, saving costs on repairs.
A hydraulic repair shop in Delhi deburrs cross drilled holes in valve bodies.
The tool's versatility allows deburring and finishing in one step, with quick turnaround and consistent results, reducing downtime.
| Abrasive Material | Aluminum Oxide |
| Recommended Bore Size | 3.75" - 4.125" |
| Recomm. Speed | 500-1200 RPM |
| Shelf Life | Factory-sealed, use within 12 months of opening |
| Cost per use | ₹23,350 per count |
| Reapplication Duration | Lasts for multiple cylinders, depends on use |
| Suitable For | Aluminum, Brass, Bronze, Non-Ferrous Metals |
| Feature | Flex-Hone 4-1/8" (105mm) | Others |
|---|---|---|
| Material Compatibility | Optimized for aluminum, brass, bronze, softer non-ferrous metals | Typically designed for ferrous metals, limited grit options |
| Finish Quality | Produces a true plateau finish with cross hatch pattern, microinch 18-30 | May produce uneven surface, lower oil retention |
| Self-Centering & Ease of Use | Engineered oversized, self-aligning, no elaborate setup needed | Requires manual adjustment, less consistent results |
| Price per Use | ₹23,350 per count | Varies by brand, typically ₹300-₹700 per cylinder |
| SKU | jsh4350 |
| GTIN | 0843469144300 |
| Brand | Flex-Hone |
| Model Number | GB418320AO |
| Diameter | 4.125" (105mm) |
| Grit | 320 Grit |
| Material | Aluminum Oxide |
About Flex-Hone
Brush Research Manufacturing pioneered plateau honing in 1972, delivering precision tools for automotive and industrial applications worldwide.
Compliance & Legal
This is a professional abrasive tool, not a medical device. No certifications required.
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This item:
Flex-Hone 4-1/8" (105mm) Diameter, 320 Grit Aluminum Oxide | Self-Centering Deburring Tool for Aluminum & Brass
23,350

This item
Flex-Hone 4-1/8" (105mm) Diameter, 320 Grit Aluminum Oxide | Self-Centering Deburring Tool for Aluminum & Brass
23,350
Total price:
40,460
You save 16,760 (29%) Extra3 items selected
3 items
40,460You save 16,760 (29%) Extra
| Attributes | Current ![]() | ![]() | ![]() | ![]() | ![]() | ||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 23,350 33,900 | 13,180 19,060 | 3,930 4,260 | 3,990 5,830 | 3,230 3,320 | 12,940 13,090 | 1,580 1,790 |
| Brand Name | Flex-Hone | Flex-Hone | Flex-Hone | Flex-Hone | Flex-Hone | AlphaTRAK | SmartSign |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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