Which materials is this diamond core drill bit suitable for?

It is designed for wet drilling in concrete, reinforced concrete, and hard natural stone.

What is the machine connection size of the Carat EB06642020?

The drill bit features a standard 5/4" UNC (1 1/4") connection for core drill machines.

Does this core drill bit require water cooling?

Yes, this model is built for wet drilling with water cooling to preserve segments and flush out slurry.

What are the exact dimensions of this drill bit?

The core bit has a drilling diameter of 66 mm, a working length of 400 mm, and a total length of 420 mm.

How are the diamond segments attached to the body?

The segments are laser-welded onto the tube, providing a secure bond resistant to weld failure.

CARAT EB06642020 Brilliant concrete drill 66 x 420mm 5/4" wet

Name: CARAT EB06642020 Brilliant concrete drill 66 x 420mm 5/4" wet
Brand: CARAT
SKU: 02757023
Price: 180.95 EUR
Availability: PreOrder

Supplier number: CARAT EB06642020 | EAN 8714452022795

Recommended Retail Price €249.26

180.95 tax incl.

€149.55 excl. VAT (incl. all environmental contributions)

On order: delivered from 13/10/2026

Ordered before 20:00 - delivered as of 13/10/2026
Free shipping
Delivery by DHL

✆ Talk to a specialist

High performance wet concrete drilling

Practical benefits

Fast and easy start: The specialized segments allow you to center cleanly without slipping on hard stone and concrete.
Laser welded Carat design: Laser-welded segments ensure maximum resistance against breakage while you drill under continuous water cooling.
Standard 5/4" UNC connection: You easily fit the core drill onto compatible drilling rigs for smooth and accurate holes.

In a nutshell

The right choise for

With the Carat Brilliant EB06642020 diamond core drill bit, you drill clean and accurate holes through concrete, reinforced concrete, and hard natural stone. The specialized segments allow you to start and center smoothly without slipping on hard surfaces. Laser-welded segments ensure maximum durability against weld failure during demanding wet drilling tasks. Featuring a 66 mm diameter, a 400 mm working length, and a 420 mm total length, it easily creates precise penetrations for plumbing, drainage pipes, and hvac conduits across thick walls and floors. The standard 5/4" unc connection fits easily onto compatible professional core drilling rigs, while continuous water cooling keeps the drill cool and efficiently clears away slurry.

Product information FAQ

€180.95

tax incl.

Key features according to our expert

Diameter: 66 mm
Length: 400 mm
Connection size (machine): 1 1/4"

Product description:

Diamond drill Laser Brilliant for use with water cooling in concrete and hard stone types.
Equipped with TT segments; for easy and quick starting.
Laser welded, thus 100% guarantee against weld breakage.

All Features

Diameter: 66 mm
Length: 400 mm
Connection size (machine): 1 1/4"

Brand CARAT
02757023
EAN 8714452022795
Supplier number CARAT EB06642020

Frequently asked questions about this product

Answered by specialists

Which materials is this diamond core drill bit suitable for?: It is designed for wet drilling in concrete, reinforced concrete, and hard natural stone.
What is the machine connection size of the Carat EB06642020?: The drill bit features a standard 5/4" UNC (1 1/4") connection for core drill machines.
Does this core drill bit require water cooling?: Yes, this model is built for wet drilling with water cooling to preserve segments and flush out slurry.
What are the exact dimensions of this drill bit?: The core bit has a drilling diameter of 66 mm, a working length of 400 mm, and a total length of 420 mm.
How are the diamond segments attached to the body?: The segments are laser-welded onto the tube, providing a secure bond resistant to weld failure.