---
product_id: 19905374
title: "Brush Research GB31424 FLEX-HONE®, 3-1/4\" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials"
brand: "flex-hone"
price: "9667 kr"
currency: ISK
in_stock: true
url: https://www.desertcart.is/products/19905374-brush-research-gb31424-flex-hone-3-1-4-83mm-diameter
store_origin: IS
region: Iceland
---

# Self-centering design Versatile for multiple materials Proudly Made in the USA Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

**Brand:** flex-hone
**Price:** 9667 kr
**Availability:** ✅ In Stock

## Summary

> 🔍 Unleash Precision with Every Stroke!

## Quick Answers

- **What is this?** Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials by flex-hone
- **How much does it cost?** 9667 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/19905374-brush-research-gb31424-flex-hone-3-1-4-83mm-diameter)

## Best For

- flex-hone enthusiasts

## Why This Product

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

## Key Features

- • **Deburring Made Easy:** Finish and deburr in one go, saving you time and effort.
- • **Exceptional Finishing:** Achieve a stunning crosshatch finish with a grit that delivers precision.
- • **Precision Engineering:** Experience self-centering and self-aligning technology for effortless use.
- • **Quality You Can Trust:** Crafted by the original inventors, ensuring top-notch performance.
- • **Versatile Applications:** Perfect for hydraulic, pneumatic, and engine cylinder rebuilding.

## Overview

The Brush Research GB31424 FLEX-HONE® is a high-quality honing tool designed for precision finishing on mild steel, stainless steel, cast iron, and softer ferrous materials. With a diameter of 3-1/4" and 240 grit silicon carbide, it offers exceptional performance for various applications, including hydraulic and pneumatic cylinder rebuilding. Proudly made in the USA, this tool features a self-centering design and is compatible with a range of rotating spindles, making it a versatile addition to any workshop.

## Description

Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

## Features

- [QUALITY]-Proudly Made in the USA. Quality and consistency you can count on made from the inventors and makers of the tool.
- [DESIGN]-The FLEX-HONE is intentionally manufactured oversized. This engineered oversize creates the optimal amount of pressure inside the cylinder wall allowing the tool to be self-centering, self-aligning and self-compensating for wear and easy use.
- [FINISHING BENEFITS]-Offered in a wide variety of grits to achieve specific finishing tolerances as well as a beautiful crosshatch finish. Ideal for rebuilding hydraulic and pneumatic cylinders, engine and brake cylinders, valve guides, pumps, compressors and more.
- [CROSSHOLE DEBURRING]-Accomplish finishing and deburring simultaneously in a single setup. Can be used in virtually any rotating spindle from a hand drill, drill press or CNC equipment.
- [240 GRIT SILICON CARBIDE ABRASIVE]-Excellent on mild steel, stainless steel, cast iron and other softer ferrous materials. Typically achieves a finish of 24 - 32 Microinch (.6 - .8 Micrometer).
- [WHAT'S INCLUDED]-1 Each of a GB Standard Duty FLEX-HONE: 3.250"(83mm) Bore Diameter, 3.50" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.001"-3.250". PLEASE NOTE: ORDER BY BORE SIZE.

## Product Details

- **Brand:** Flex-Hone
- **Grit Material:** Silicon Carbide
- **Bristle Type:** Abrasive Globule Bonded To Flexible Nylon Filament
- **Color:** Grey
- **Compatible Material:** Mild Steel, Stainless Cast Iron, and Other Softer Ferrous Materials

## Images

![Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials - Image 1](https://m.media-amazon.com/images/I/61f9Ueb7-8L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Frequently Bought Together

- Brush Research GB31424 FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials
- Brush Research FHQ FLEX-HONE® Oil, Specially Formulated Honing Oil, 1 Quart Bottle (32 fl oz)
- Permatex 81950 Ultra Slick Engine Assembly Lube, 4 oz. , Red

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**Shop now:** [https://www.desertcart.is/products/19905374-brush-research-gb31424-flex-hone-3-1-4-83mm-diameter](https://www.desertcart.is/products/19905374-brush-research-gb31424-flex-hone-3-1-4-83mm-diameter)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-22*