What are the dimensions of this router bit?

The bit features an 8 mm cutting diameter, a 20 mm cutting length, and an 8 mm shank diameter.

What is the main advantage of reversible blades?

You can quickly rotate or replace the carbide blade, ensuring a consistent cutting diameter without resharpening.

Which routers are compatible with this bit?

It fits any plunge router or trim router with an 8 mm collet, including various Festool OF models.

Does this groove cutter have a guide bearing?

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

Can this bit plunge directly into wood?

Yes, the end- and side-cutting carbide geometry allows for direct plunge cuts into the material.

FESTOOL HW S8 D8/20 WP Z1 rotary cutter - 491078

Name: FESTOOL HW S8 D8/20 WP Z1 rotary cutter - 491078
Brand: FESTOOL
SKU: 02332176
Price: 130.4 EUR
Availability: PreOrder

Supplier number: FESTOOL 491078 | EAN 4014549075395

Recommended Retail Price €151.58

130.40 tax incl.

€107.77 excl. VAT (incl. all environmental contributions)

On order: delivered from 12/10/2026

blister

Ordered before 20:00 - delivered as of 12/10/2026
Free shipping
Delivery by DHL

✆ Talk to a specialist

Consumables

FESTOOL HW-WP 20x4,1x1,1 spare blade (4 pcs) - 491386

Recommended Retail Price €72.13

66.60

€55.04 excl. VAT

Delivery time average 10 days.

Accurate groove routing with Festool

Practical benefits

Always constant cutting diameter: Thanks to the reversible blade design, you maintain an exact 8 mm diameter without any need for resharpening.
Extended carbide blade lifespan: You simply rotate the reversible carbide insert when worn to instantly continue routing with a fresh edge.
Clean and deep grooves: With a 20 mm cutting length, you mill precise and clean deep slots into wood and composite panels.

In a nutshell

The right choise for

With the Festool hw S8 D8/20 wp Z1 straight router bit, you rout accurate and clean grooves without the downtime of regrinding. Thanks to the indexable turnover blade design, you maintain a consistent 8 mm cutting diameter. When one edge dulls, simply rotate the carbide insert to instantly double its working lifespan. Featuring a 20 mm cutting length and an 8 mm shank, this bit easily cuts deep slots, rebates, and joints into solid wood and sheet materials. Its end- and side-cutting geometry also enables direct plunge cuts into your workpiece.

Product information FAQ

€130.40

tax incl.

Key features according to our expert

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

Product description

Groove cutter with reversible blades

Carbide groove cutter with replaceable reversible blades, cuts both on the head and on the side. Ideal for deep grooves. Reversible blade routing tools have fundamental advantages compared with traditional tools, especially for intensive use: No resharpening, tool always ready to use and a diameter that remains constant.

Removable blades allow working with constant cutter dimensions and high precision - optimal when templates are used
No re-sharpening, can be used again immediately
The blade length of 25 mm also enables routing of deeper grooves

Ideally suited for

Routing templates
Grooves in wood and wood materials

All Features

Diameter: 8 mm
Cutting length: 20 mm
Shank size (milling cutter): 8 mm
Router bit type: Straight cutter
With bearing: No
D: 8.00 mm
Nl: 20.00 mm
Gl: 50.00 mm
S: 8 mm

Brand FESTOOL
02332176
EAN 4014549075395
Supplier number FESTOOL 491078

Frequently asked questions about this product

Answered by specialists

What are the dimensions of this router bit?: The bit features an 8 mm cutting diameter, a 20 mm cutting length, and an 8 mm shank diameter.
What is the main advantage of reversible blades?: You can quickly rotate or replace the carbide blade, ensuring a consistent cutting diameter without resharpening.
Which routers are compatible with this bit?: It fits any plunge router or trim router with an 8 mm collet, including various Festool OF models.
Does this groove cutter have a guide bearing?: No, this bit has no bearing and is guided using a parallel fence, guide rail, or guide bushing.
Can this bit plunge directly into wood?: Yes, the end- and side-cutting carbide geometry allows for direct plunge cuts into the material.