What are the dimensions of this groove cutter?

The router bit has a 25 mm diameter, a 20 mm cutting length, and an 8 mm shank.

Which routers are compatible with this cutter?

It fits any router equipped with an 8 mm collet, including various Festool models such as the OF 1010.

Can you plunge cut directly into the material with this bit?

Yes, the carbide tip cutting edge allows easy plunge cutting and drilling into wood.

Does this groove cutter come with a guide bearing?

No, this bit has no ball bearing and is guided using a parallel fence, guide rail, or copy ring.

What applications is this router bit designed for?

It is used for routing grooves, rebates, slots, and fittings in solid wood and sheet materials.

FESTOOL HW S8 D25/20 groove cutter - 490975

Name: FESTOOL HW S8 D25/20 groove cutter - 490975
Brand: FESTOOL
SKU: 02332133
Price: 74.2 EUR
Availability: PreOrder

Supplier number: FESTOOL 490975 | EAN 4014549000748

Recommended Retail Price €88.09

74.20 tax incl.

€61.32 excl. VAT (incl. all environmental contributions)

On order: delivered from 12/10/2026

blister

Ordered before 20:00 - delivered as of 12/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

✆ Talk to a specialist

Clean and accurate grooving with Festool

Practical benefits

Extended carbide cutting life: The solid carbide cutting edges give you long-lasting sharpness when plunging and routing through abrasive boards.
Efficient wide routing passes: The 25 mm diameter enables you to cut wide, clean grooves and rebates with consistent precision.
Secure and stable clamping: The standard 8 mm shank fits securely in compatible routers, delivering smooth power and minimal vibration.

In a nutshell

The right choise for

With the Festool hw S8 D25/20 router bit, you can mill clean, accurate grooves, rebates, and joints into solid wood and sheet materials. Thanks to the durable carbide cutting edges and plunge-cutting tip, you plunge directly into the workpiece with minimal wear and without tear-out. The 25 mm diameter and 20 mm cutting length allow you to cut wide slots and hardware recesses quickly and efficiently in a single pass. Featuring a standard 8 mm shank, it mounts securely into compatible routers such as the Festool of 1010, delivering smooth, low-vibration handling and dependable precision.

Product information FAQ

€74.20

tax incl.

Key features according to our expert

Diameter: 25 mm
Cutting length: 20 mm
Shank size (milling cutter): 8 mm
Router bit type: Straight cutter
With bearing: No

Product description

Groove cutter

If you wish to achieve perfect cutting results with ease when drilling, grooving, rebating and long-hole routing, you are best advised to use the HW groove cutter. The cutter cuts precisely, makes drilling easier and has a long service life.

Long router bit service life even for plunge cutting because of the soldered standard tungsten carbide blade
An optimal cutter geometry, a stable cutter shaft and the proper sharpness ensure flawless surfaces

Ideally suited for

Grooves in furniture manufacturing
Routing fittings
Rebating of solid wood and panel material
Working with templates

All Features

Diameter: 25 mm
Cutting length: 20 mm
Shank size (milling cutter): 8 mm
Router bit type: Straight cutter
With bearing: No
D: 25.00 mm
Nl: 20.00 mm
Gl: 60.00 mm
S: 8 mm

Brand FESTOOL
02332133
EAN 4014549000748
Supplier number FESTOOL 490975

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this groove cutter?: The router bit has a 25 mm diameter, a 20 mm cutting length, and an 8 mm shank.
Which routers are compatible with this cutter?: It fits any router equipped with an 8 mm collet, including various Festool models such as the OF 1010.
Can you plunge cut directly into the material with this bit?: Yes, the carbide tip cutting edge allows easy plunge cutting and drilling into wood.
Does this groove cutter come with a guide bearing?: No, this bit has no ball bearing and is guided using a parallel fence, guide rail, or copy ring.
What applications is this router bit designed for?: It is used for routing grooves, rebates, slots, and fittings in solid wood and sheet materials.