Wish one is best for a cylinder wall that is 75mm (2.95 inch) ?

For the cylinder wall bore size of 2.95", the 3" Flex-Hone is the correct choice., Enter this ASIN # B002N3AA2A in the Amazon search bar for the correct hone.

Hello, my cylinder bore is 3 1/8" what size tool do i need to purchase thank you.

For a 3.125" bore, your application will require the 3-1/4" (3.250") diameter Flex-hone. The 3-1/4" will work perfectly in the 3-1/8" bore as the 3-1/4" Flex-hones working range is down to 3.000". Thank you for the inquiry.

Can i use this to hone out an old cast iron pipe? it's about 3 3/4" now and i want it at 4" id. thanks

This hone is not coarse enough to remove that much material. It would take forever and the hone would wear out first. You would need a lathe to remove that amount of thickness.

I see that it says tool is oversized. For a cylinder bore of 3.66, should I be getting the 3.75 or the 3.50 model?

1I bought a 4.50 and used it on a 3.55 bore with no problem I didn't hone as much as instruction said for large bore, hatch marks were beautiful so go bigger and you can use it over a broad area of bores.

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Brush Research GB31224 FLEX-HONE®, 3-1/2" (89mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

Brush Research GB31224 FLEX-HONE®, 3-1/2" (89mm) Diameter, 240 Grit, Silicon Carbide, For Mild Steel, Stainless Steel, Cast Iron and Softer Ferrous Materials

Product ID: 5823001

Details

Brand
Flex-Hone
Bristle Type
Abrasive To
Grit Material
Silicon
Material
Silicon
Product Dimensions
8"L x 3.5"W

🔧240 Grit Silicon Carbide Abrasive

⚙️3.5" Diameter Precision Fit

🛠️Self-Centering & Wear-Compensating Design

R1892

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Description

🔩 Elevate your cylinder finish game — precision honing that means business!

PROUDLY MADE IN THE USA - Trusted quality from the original inventors ensures consistent, reliable performance.
VERSATILE COMPATIBILITY - Works seamlessly with hand drills, drill presses, and CNC machines for professional-grade results.
240 GRIT SILICON CARBIDE POWER - Delivers a superior plateau finish on mild steel, stainless steel, and cast iron.
DUAL ACTION FINISHING DEBURRING - Save time by combining crosshole deburring and surface finishing in one setup.
ENGINEERED OVERSIZE FOR PERFECT PRESSURE - Self-centering and self-aligning for flawless cylinder honing every time.

The Brush Research GB31224 FLEX-HONE® is a 3.5-inch diameter, 240 grit silicon carbide honing tool designed for mild steel, stainless steel, cast iron, and softer ferrous materials. Its patented oversized design ensures self-centering, self-aligning, and wear compensation for consistent, high-quality plateau finishes and crosshole deburring. Ideal for automotive, hydraulic, and pneumatic cylinder refinishing, it fits bore diameters from 3.251" to 3.5" and is compatible with various rotating spindles. Made in the USA by the original FLEX-HONE® inventors, it guarantees professional-grade results with minimal setup.

Specifications

ASIN	B002XUL1EE
Best Sellers Rank	#9,204 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Flex Hones
Brand	Flex-Hone
Brand Name	Flex-Hone
Bristle Type	Abrasive Globule Bonded To Flexible Nylon Filament
Compatible Material	Metal
Customer Reviews	4.8 out of 5 stars 1,842 Reviews
Grit Material	Silicon Carbide
Grit Material Type	Silicon Carbide
Grit Type	240 Grit
Included Components	GB 3-1/2" (89MM) 240SC FLEX-HONE
Item Diameter	3.5 Inches
Item Dimensions	13.5 x 5.1 x 5.1 inches
Item Dimensions L x W	8"L x 3.5"W
Item Type Name	GB 3-1/2 89MM 240SC FLEX-HONE
Item Weight	0.68 Pounds
Manufacturer	Brush Research Manufacturing
Material	Silicon Carbide
Material Type	Silicon Carbide
Model	GB31224
Number of Items	1
Number of Pieces	1
Part Number	GB31224
Product Dimensions	8"L x 3.5"W
Recommended Uses For Product	Deburring, Finishing
Unit Count	1.0 Count
Warranty Description	Manufacturer Warranty

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R1892

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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