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 for smooth finish

⚙️3.5" diameter precision fit

🛠️Self-centering & self-aligning design

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Description

🛠️ Elevate your cylinder finish game—because flawless surfaces aren’t optional.

DURABILITY MEETS EASE - Self-compensating for wear, no special setup needed—engineered for professionals and DIYers alike.
DUAL ACTION EFFICIENCY - Simultaneously deburrs and finishes crossholes in one seamless operation—save time, boost productivity.
EFFORTLESS PRECISION FIT - Oversized design ensures perfect pressure and alignment inside cylinders for flawless finishing.
VERSATILE SURFACE MASTERY - 240 grit silicon carbide excels on mild steel, stainless steel, cast iron, and softer ferrous metals.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA by the original FLEX-HONE® inventors, guaranteeing consistent quality and performance.

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 oversized, self-centering design delivers a precise crosshatch plateau finish that improves oil retention, seal life, and surface performance. Ideal for deburring and finishing hydraulic, pneumatic, and engine cylinders, this durable, easy-to-use tool is proudly made in the USA and trusted by professionals worldwide.

Specifications

ASIN	B002XUL1EE
Best Sellers Rank	#6,691 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Flex Hones
Brand Name	Flex-Hone
Bristle Type	Abrasive Globule Bonded To Flexible Nylon Filament
Compatible Material	Metal
Customer Reviews	4.8 4.8 out of 5 stars (1,839)
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	10.88 ounces
Manufacturer	Brush Research Manufacturing
Material Type	Silicon Carbide
Model	GB31224
Number of Items	1
Number of Pieces	1
Part Number	GB31224
Recommended Uses For Product	Deburring, Finishing
Unit Count	1.0 Count
Warranty Description	Manufacturer Warranty

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€ 106.28

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered 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 Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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