What is the Dewalt DT3758-QZ diamond joint cutter used for?

This mortar raking disc is designed for quickly and cleanly removing mortar joints from masonry and concrete.

What is the thickness of the diamond segment?

The disc features a segment thickness of 6,3 mm, allowing you to rake wide joints in a single pass thanks to its sandwich design.

Which tools are compatible with this raking blade?

With a 125 mm diameter and a standard 22,2 mm bore, this disc fits most 125 mm angle grinders and wall chasers.

Is this blade suitable for heavy-duty use?

Yes, the laser-welded diamond segments and heat-treated steel body are built to withstand heavy-duty and intensive use.

Can this disc be used for dry cutting?

Yes, this diamond disc is suitable for dry cutting on an angle grinder or wall chaser equipped with dust extraction.

DEWALT DT3758-QZ EXTREME 125 mm diamond joint cutter

Name: DEWALT DT3758-QZ EXTREME 125 mm diamond joint cutter
Brand: DEWALT
SKU: 08070511
Price: 36.95 EUR
Availability: PreOrder

Supplier number: DEWALT DT3758-QZ | EAN 5035048085479

Recommended Retail Price €81.68

36.95 tax incl.

€30.54 excl. VAT (incl. all environmental contributions)

On order: delivered from 16/10/2026

Ordered before 20:00 - delivered as of 16/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

What does this mean exactly?

Free battery, delivered directly: spend a total of €350 excl. VAT on DeWALT products and receive a free XR 18V 5.0Ah battery worth €128.38. This is an exclusive Klium promotion: the battery is automatically added to your shopping cart and delivered together with your order.
Free work light, delivered after registration: if you also purchase a participating product from the DeWALT work light promotion, you will receive a free DeWALT work light, depending on the participating machine.
To receive your free work light, register your purchase after receiving your order via dewalt.be or dewalt.nl.
Klium free battery promotion: valid from 01.10.2026 to 31.12.2026.
DeWALT work light promotion: valid from 01.09.2026 to 31.12.2026.

During DeWALT Power Month, you can combine a free battery from Klium with a free work light from DeWALT.

Efficient mortar raking with Dewalt

Practical benefits

Fast and effective removal: The twin wheel construction with a 6.3 mm width allows you to clear mortar and masonry quickly and thoroughly.
Laser-welded heat-resistant body: The heavy-duty steel core stays stable under intense loads, giving you reliable control during demanding joint cutting jobs.
Durable high-performance diamond segments: Premium diamond segments provide exceptional wear resistance, ensuring you achieve consistent cutting results across tough concrete surfaces.

In a nutshell

The right choise for

With the Dewalt DT3758-QZ diamond mortar raking blade, you clear old mortar joints and masonry quickly and efficiently. Featuring a twin wheel construction with a 6.3 mm width, it allows you to rake out joints in a single pass without damaging the surrounding brickwork. The laser-welded heat-resistant steel core maintains excellent stability and control during demanding cutting jobs. Robust diamond segments deliver exceptional wear resistance and long-lasting cutting performance in tough concrete and stone materials. With its 125 mm diameter and standard 22.2 mm bore, this joint cutter fits seamlessly onto compatible angle grinders and wall chasers for productive facade restoration.

Product information FAQ

€36.95

tax incl.

Key features according to our expert

(Disc) diameter: 125 mm
Connection size (disc): 22,2 mm
Mounting (disc): Bore
Application (disc): Cutting
For material: Concrete
Thickness: 6,3 mm
Product Range: Dewalt EXTREME

Product description

Diamond joint cutter EXTREME 125mm

Features

Fast removal of mortar and masonry thanks to double wheel construction
Laser-welded to the housing for heavier applications

All Features

(disc) diameter: 125 mm
Connection size (disc): 22,2 mm
Mounting (disc): Bore
Application (disc): Cutting
For material: Concrete
Thickness: 6,3 mm
Thickness: 10,0 mm
Pitch: 125,0 mm
Diameter: 22,2 mm
Segment height: 1,0
Grind: Masonry
Pack quantity: 6,3 mm
Product range: Dewalt EXTREME

Brand DEWALT
08070511
EAN 5035048085479
Supplier number DEWALT DT3758-QZ

Frequently asked questions about this product

Answered by specialists

What is the Dewalt DT3758-QZ diamond joint cutter used for?: This mortar raking disc is designed for quickly and cleanly removing mortar joints from masonry and concrete.
What is the thickness of the diamond segment?: The disc features a segment thickness of 6,3 mm, allowing you to rake wide joints in a single pass thanks to its sandwich design.
Which tools are compatible with this raking blade?: With a 125 mm diameter and a standard 22,2 mm bore, this disc fits most 125 mm angle grinders and wall chasers.
Is this blade suitable for heavy-duty use?: Yes, the laser-welded diamond segments and heat-treated steel body are built to withstand heavy-duty and intensive use.
Can this disc be used for dry cutting?: Yes, this diamond disc is suitable for dry cutting on an angle grinder or wall chaser equipped with dust extraction.