18th Jul 2026, 04:53 PM

Brush Research GBD40020AO Flex-Hone, 4 inch (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Name: Brush Research GBD40020AO Flex-Hone,4 inch 102mm Diameter,20 Grit,Aluminum Oxide,for Aluminum,Brass,Bronze and Softer Non-Ferrous Materials
Brand: Flex-Hone
Price: 117.48 USD
Availability: InStock
Rating: 8.8 (5 reviews)

Price may vary by location, shipping cost, and availability.

$117.48

Buy @ amazon.com

Highest: $195.29

Average: $157.03

Lowest: $110.74

Should you buy at this price?

Skip

Wait

Okay

Yes

Based our analysis and observation, there is 50.80% chance that the price of Brush Research GBD40020AO Flex-Hone 4 inch 102mm... will increase. Price of product might fluctuate between 6% and 10% of current price.*

Price History Graph

Offer Price Prices

Lowest: -

Average: -

Highest: -

Price History Information

You can check the price history of Brush Research GBD40020AO Flex-Hone, 4 inch (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials here. This product's current Price in USA is $117.48. The average and highest prices are $157.03 and $195.29 respectively.

Lowest Ever Price	$110.74
10th Jul 2026
Average Price	$157.03
Based on 142 days price tracking
Highest Price	$195.29
23rd Mar 2026

Price History of All Variants of Brush Research GBD40020AO Flex-Hone 4 inch 102mm...

Brush Research GBD314120AO FLEX-HONE 3-1434 83mm Diameter

Offer Price: $99.23

Brush Research GBD314120AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD414120AO FLEX-HONE 4-1434 108mm Diameter

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE 3-1434 83mm Diameter

Offer Price: $193.65

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD51280AO Flex-Hone 5-1234 140mm Diameter

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD40020AO Flex-Hone 434 102mm Diameter

Brush Research GBD40020AO Flex-Hone®, 4" (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $159.74

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD400240AO FLEX-HONE 434 101mm Diameter

Offer Price: $104.75

Brush Research GBD400240AO FLEX-HONE®, 4" (101mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD50060AO Flex-Hone 534 127mm Diameter

Offer Price: $152.07

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD334400AO Flex-Hone 3-3434 95mm Diameter

Brush Research GBD334400AO Flex-Hone®, 3-3/4" (95mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD334400AO Flex-Hone®, 3-3/4" (95mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $145.63

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314400AO Flex-Hone 3-1434 83mm Diameter

Offer Price: $143.14

Brush Research GBD314400AO Flex-Hone®, 3-1/4" (83mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD600800AO Flex-Hone 634 152mm Diameter

Offer Price: $259.71

Brush Research GBD600800AO Flex-Hone®, 6" (152mm) Diameter, 800 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD312320AO FLEX-HONE 3-1234 89mm Diameter

Brush Research GBD312320AO FLEX-HONE®, 3-1/2" (89mm) Diameter, 320 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $109.17

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD500800AO Flex-Hone 534 127mm Diameter

Offer Price: $218.46

Brush Research GBD500800AO Flex-Hone®, 5" (127mm) Diameter, 800 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD60060AO Flex-Hone 634 152mm Diameter

Brush Research GBD60060AO Flex-Hone®, 6" (152mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $173.09

Brush Research GBD60060AO Flex-Hone®, 6" (152mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $117.48

Brush Research GBD40020AO Flex-Hone®, 4" (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD312320AO FLEX-HONE®, 3-1/2" (89mm) Diameter, 320 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD600400AO Flex-Hone 634 152mm Diameter

Offer Price: $271.19

Brush Research GBD600400AO Flex-Hone®, 6" (152mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $98.68

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD412240AO FLEX-HONE 4-1234 114mm Diameter

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $71.30

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD60060AO Flex-Hone®, 6" (152mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD60060AO Flex-Hone®, 6" (152mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $120.27

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD60060AO Flex-Hone®, 6" (152mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314120AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $177.99

Brush Research GBD312320AO FLEX-HONE®, 3-1/2" (89mm) Diameter, 320 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD312320AO FLEX-HONE®, 3-1/2" (89mm) Diameter, 320 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD314320AO FLEX-HONE 3-1434 83mm Diameter

Offer Price: $143.14

Brush Research GBD314320AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 320 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD414800AO Flex-Hone 4-1434 108mm Diameter

Offer Price: $179.56

Brush Research GBD414800AO Flex-Hone®, 4-1/4" (108mm) Diameter, 800 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $231.99

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD414120AO FLEX-HONE®, 4-1/4" (108mm) Diameter, 120 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD334400AO Flex-Hone®, 3-3/4" (95mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD334600AO Flex-Hone 3-3434 95mm Diameter

Offer Price: $158.12

Brush Research GBD334600AO Flex-Hone®, 3-3/4" (95mm) Diameter, 600 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD412240AO FLEX-HONE®, 4-1/2" (114mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $95.48

Brush Research GBD314240AO FLEX-HONE®, 3-1/4" (83mm) Diameter, 240 Grit, Aluminum Oxide,For Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $158.12

Brush Research GBD334400AO Flex-Hone®, 3-3/4" (95mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD400600AO Flex-Hone 434 102mm Diameter

Offer Price: $167.38

Brush Research GBD400600AO Flex-Hone®, 4" (102mm) Diameter, 600 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD400800AO Flex-Hone 434 102mm Diameter

Offer Price: $66.31

Brush Research GBD400800AO Flex-Hone®, 4" (102mm) Diameter, 800 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD512800AO Flex-Hone 5-1234 140mm Diameter

Offer Price: $250.28

Brush Research GBD512800AO Flex-Hone®, 5-1/2" (140mm) Diameter, 800 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD40020AO Flex-Hone®, 4" (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD51280AO Flex-Hone®, 5-1/2" (140mm) Diameter, 80 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD40020AO Flex-Hone®, 4" (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD334400AO Flex-Hone®, 3-3/4" (95mm) Diameter, 400 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD50060AO Flex-Hone®, 5" (127mm) Diameter, 60 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Brush Research GBD61220AO Flex-Hone 6-1234 165mm Diameter

Price: $80.35

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Offer Price: $330.92

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Price: $139.52

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Price: $111.52

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Price: $164.81

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Price: $117.87

Brush Research GBD61220AO Flex-Hone®, 6-1/2" (165mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Get Deal

Current Price in USA

Price	$117.48

Recent Price Drops on Brush Research GBD40020AO Flex-Hone, 4 inch (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Price Drop 9th Jul 2026

$117.48 → $110.74

5.74% drop

Price Drop 28th May 2026

$195.29 → $112.50

42.39% drop

Product Information

Details

Product Name	Brush Research GBD40020AO Flex-Hone, 4 inch (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials
Store Product Code	B0C39NQL66
Store Name	amazon.com
Brand	Flex-Hone
Rating	8.8 / 10
Category	Cup Brushes
Product Manufacturer	Brush Research Manufacturing
Model Number	GBD40020AO

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.
[20 GRIT ALUMINUM OXIDE ABRASIVE]-Excellent on Aluminum, Brass, Bronze, and softer non-ferrous materials. 240 AO is commonly used for deglazing Nikasil cylinders. Typically achieves a finish of 125 - 250 Microinch (3.2 - 6.3 Micrometer).
[WHAT'S INCLUDED]-1 Each of a GBD Heavy Duty FLEX-HONE: 4.000" (102mm) Bore Diameter, 6" Abrasive Part Length, 0.310" Shank Diameter, 13.5" Overall Length. For Use on Bore Diameters Between 3.751"-4.000". PLEASE NOTE: ORDER BY BORE SIZE.

Images

Image of Brush Research GBD40020AO Flex-Hone, 4 inch (102mm) Diameter, 20 Grit, Aluminum Oxide,for Aluminum, Brass, Bronze and Softer Non-Ferrous Materials

Rating and Reviews

8.8 Based on 5 reviews

Brush Research GBD40020AO Flex-Hone 4 inch 102mm has 8.8 rating out of 10. This average rating is consist of 5 individual ratings. You can rate this product at product review page.