---
product_id: 76077944
title: "Flex-Hone Tool-GBD30012 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3\" (76 mm) Diameter, 120 Grit Size"
brand: "brand: flex-hone tool"
price: "₨50395"
currency: LKR
in_stock: true
reviews_count: 11
url: https://www.desertcart.lk/products/76077944-flex-hone-tool-gbd30012-brush-research-cylinder-hone-gbd-series
store_origin: LK
region: Sri Lanka
---

# Flex-Hone Tool-GBD30012 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 120 Grit Size

**Brand:** brand: flex-hone tool
**Price:** ₨50395
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Flex-Hone Tool-GBD30012 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 120 Grit Size by brand: flex-hone tool
- **How much does it cost?** ₨50395 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/76077944-flex-hone-tool-gbd30012-brush-research-cylinder-hone-gbd-series)

## Best For

- brand: flex-hone tool enthusiasts

## Why This Product

- Trusted brand: flex-hone tool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Fits Hole Size:3 Inches





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Size:3"





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Grit Type:120





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Item Length String:13.5 Inches





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Shank Diameter:0.310 Inches





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Maximum Rotational Speed:800 RPM





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Part Number:GBD30012




























The Flex-Hone® tool was originally created by Brush Research Manufacturing to deglaze cylinder walls in automotive applications. Brush Research embraced the benefits of a plateau finish and pioneered the concept of plateau honing culminating in the introduction of the Flex-Hone tool in 1972. The Flex-Hone has gained many nicknames over the years and including ball hone, ball style hone, flexihone, dingleberry hone, bead brush, glaze breaker and glaze buster. Flexible honing with the Flex-Hone tool produces an oil holding cross hatch pattern and a true plateau finish free of cut, torn and folded metal. Any type or size of cylinder can benefit from the Flex-Hone®. These abrasive bead style brushes are produced in standard diameters from 4mm to 36 inches. Nine abrasive types are offered including silicon carbide, aluminum oxide, boron carbide and diamond allowing the tool to be tailored to finish any base material. A choice of 11 different grit selections are available for precise control of finish parameters. The elimination of peaks results in rapid ring seating, better oil control, reduced seepage in hydraulic and pneumatic applications and provides better seal performance and longer seal life. Successful applications include firearm chambers, shotgun barrels, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, brake cylinders, wheel cylinders and the list goes on and on. Flex-Hone® tools are also very effective for deburring cross drilled holes, port radiusing and edge blending. Because of its unique construction, the Flex-Hone is self-centering, self-aligning, and self-compensating for wear so it does not require an elaborate set-up or special training. Deburring can be effectively automated and combined in the machining process to allow a complete cylinder finish in one operation or it can be employed as a secondary operation with equal results.

## Features

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- Flexible abrasive cylinder hone for surface finishing and cross hole deburring
- Self-centering, self-aligning, self-compensating for wear
- Use by hand or in CNC equipment
- Order by actual bore size, tool produced oversized
- Sizes from 4mm to 36 inches

## Images

![Flex-Hone Tool-GBD30012 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 120 Grit Size - Image 1](https://images-na.ssl-images-amazon.com/images/I/71D9eBU%2B93L.jpg)

## Available Options

This product comes in different **Size, Item Length String, Shank Diameter, Fits Hole Size, Part Number, Grit Type, Maximum Rotational Speed** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    4.0" is the right size for a 5.3L Chevy Gen 3 V8
  

*by T***M on Reviewed in the United States on March 14, 2020*

I did some reading prior to rebuilding a 5.3L aluminum block Chevy V8. I got this product through the warehouse at a great price, and found while it was a slightly tight fit for my 3.78" bore, as the next size up it was the proper size for this application. I followed Flex Hone's directions (also used their oil) and it returned a good cross hatch pattern. I can't rate it on longevity since I've only used it one time.

### ⭐⭐⭐⭐⭐ 







  
  
    All the bores came out factory perfect, except #4 which I would give a 8 ...
  

*by J***B on Reviewed in the United States on November 1, 2014*

I have a 2005 Honda CRV that was burning one quart of oil per tank of gas.  YES you did read that correctly.  Car was abused before I got it, but now I have to fix it.  Pulled the engine apart and found scoring on the #4 cylinder wall and a damaged piston.  Replaced all 4 pistons, rings, and rod bearings.  Took this hone to all the cylinder walls with a little "extra" in #4.  All the bores came out factory perfect, except #4 which I would give a 8 out of 10.  You could still see some vertical lines but it was 95% better than before.  Hondas stance is do not hone, just install rings, and if you can catch a scratch with your fingernail, the block needs replacement.  Well I wasn't replacing my block, so this was the next best thing.  Put it all back together and the engine runs perfect.  Car does not burn a drop of oil and the oil is still golden.  It would be black from blowby within 500 miles before.  Very pleased!  and highly recommended.

### ⭐⭐⭐⭐⭐ 







  
  
    Awesome
  

*by C***S on Reviewed in the United States on June 25, 2020*

Used this hone on my 4.030” 351W and am very pleased with the results. About 30 seconds in each cylinder with a little motor oil Is all I needed. Worked great.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-17*