Price loading...

Flex-Hone Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive, 3-1/2" (89 mm) Diameter, 120 Grit Size

GB31212

Price data last checked 103 day(s) ago - refreshing...

View at Amazon

Price History & Forecast

No Price Data Available

Price history will appear here once data is collected from Amazon.

Price Distribution

No price data available for histogram

Description

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.

Key Features

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

Product Specifications

Model
GB31212
Size
3-1/2\
Format
DIY & Tools
Domain
Amazon UK
Listed Since
08 February 2010

Barcode

No barcode data available

Similar Products You Might Like

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-1/2" (89 mm) Diameter, 240 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-1/2" (89 mm) Diameter, 240 Grit Size

Flex-Hone

£82.44 29 Jan 2026
Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 4-1/4" (108 mm) Diameter, 180 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 4-1/4" (108 mm) Diameter, 180 Grit Size

Flex-Hone

£66.28 29 Mar 2026
Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-3/4" (95 mm) Diameter, 120 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-3/4" (95 mm) Diameter, 120 Grit Size

Flex-Hone

£80.48 28 Jan 2026
Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 8" (203 mm) Diameter, 120 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 8" (203 mm) Diameter, 120 Grit Size

Flex-Hone

£47.12 30 Jan 2026
Brush Research Flex-Hone Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-3/4" (95 mm) Diameter, 240 Grit Size
99% match

Brush Research Flex-Hone Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-3/4" (95 mm) Diameter, 240 Grit Size

Flex-Hone

£88.35 28 Jan 2026
Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 6-1/2" (165 mm) Diameter, 240 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 6-1/2" (165 mm) Diameter, 240 Grit Size

Flex-Hone

£57.64 28 Jan 2026
Flex-Hone Tool BC23432 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 2-3/4" (70 mm) Diameter, 320 Grit Size
99% match

Flex-Hone Tool BC23432 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 2-3/4" (70 mm) Diameter, 320 Grit Size

Flex-Hone

£57.50 24 Jan 2026
Flex-Hone Tool-GBD30012 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 120 Grit Size
99% match

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

Flex-Hone

£36.02 06 Feb 2026
Brush Research FLEX-HONE Cylinder Hone, BC Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 240 Grit Size
99% match

Brush Research FLEX-HONE Cylinder Hone, BC Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 240 Grit Size

Flex-Hone

£42.48 28 Jan 2026
FLEX-HONE Tool-BC27832 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 2-7/8" (73 mm) Diameter, 320 Grit Size
99% match

FLEX-HONE Tool-BC27832 Brush Research Cylinder Hone, BC Series, Silicon Carbide Abrasive, 2-7/8" (73 mm) Diameter, 320 Grit Size

Flex-Hone

Out of Stock 31 Jan 2026
Flex-Hone Tool-GBD31412 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-1/4" (83 mm) Diameter, 120 Grit Size
99% match

Flex-Hone Tool-GBD31412 Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3-1/4" (83 mm) Diameter, 120 Grit Size

Flex-Hone

£74.25 06 Feb 2026
Flex-Hone Tool - GBD71212 Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 7-1/2" (190 mm) Diameter, 120 Grit Size
99% match

Flex-Hone Tool - GBD71212 Brush Research FLEX-HONE Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 7-1/2" (190 mm) Diameter, 120 Grit Size

Flex-Hone

£68.65 07 Feb 2026
Flex-Hone Tool Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 240 Grit Size
99% match

Flex-Hone Tool Brush Research Cylinder Hone, GBD Series, Silicon Carbide Abrasive, 3" (76 mm) Diameter, 240 Grit Size

Flex-Hone

£70.61 28 Jan 2026
Brush Research GB Standard Duty Flex Hone for Block Cylinders, Aluminum Oxide, 3-1/4" Diameter, 180 Grit (Pack of 1)
99% match

Brush Research GB Standard Duty Flex Hone for Block Cylinders, Aluminum Oxide, 3-1/4" Diameter, 180 Grit (Pack of 1)

Flex-Hone

£52.12 31 Jan 2026
Brush Research - GB314240AO GB Standard Duty Flex Hone for Block Cylinders, Aluminum Oxide, 3-1/4" Diameter, 240 Grit (Pack of 1)
96% match

Brush Research - GB314240AO GB Standard Duty Flex Hone for Block Cylinders, Aluminum Oxide, 3-1/4" Diameter, 240 Grit (Pack of 1)

Flex-Hone

£64.16 29 Jan 2026
Brush Research BC Standard Flex Hone for Brake Cylinders, Hydraulics and Valve Guides, Aluminum Oxide, 1-3/4" Diameter, 320 Grit (Pack of 1)
96% match

Brush Research BC Standard Flex Hone for Brake Cylinders, Hydraulics and Valve Guides, Aluminum Oxide, 1-3/4" Diameter, 320 Grit (Pack of 1)

Flex-Hone

£46.16 29 Jan 2026
2-7/8" (73MM) Flex Hone 240 Grit Aluminum Oxide
96% match

2-7/8" (73MM) Flex Hone 240 Grit Aluminum Oxide

Flex-Hone

£46.01 23 Jan 2026