Which materials is this diamond core bit suitable for?

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

What connection size does this Carat core bit have?

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

Can you use this core bit for dry drilling?

No, this model is exclusively designed for wet drilling with water cooling.

What are the dimensions of this diamond core bit?

It has a 71 mm diameter and a 400 mm working length (420 mm total length).

How are the diamond segments attached?

The segments are laser-welded to ensure high durability and prevent segment detachment.

CARAT EB07142020 Brilliant concrete drill 71 x 420mm 5/4" wet

Name: CARAT EB07142020 Brilliant concrete drill 71 x 420mm 5/4" wet
Brand: CARAT
SKU: 02757026
Price: 178.4 EUR
Availability: InStock

Supplier number: CARAT EB07142020 | EAN 8714452022818

Recommended Retail Price €245.63

178.40 tax incl.

€147.44 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 1 products in stock.

Ordered before 20:00 - delivered tomorrow 03/10/2026
Free shipping
Delivery by DHL

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Effortless drilling through reinforced concrete

Practical benefits

Fast and precise start: The specialized diamond segments allow you to cut smoothly and quickly through hard mineral building materials.
Laser-welded segment strength: Firm laser welding ensures high resistance against breakage when you perform demanding wet core drilling operations.
Universal machine fitting: You connect effortlessly to compatible diamond drill motors using the standard 5/4" UNC threaded connection.

In a nutshell

The right choise for

With the Carat Brilliant eb diamond core bit, you drill with high precision through reinforced concrete, plain concrete, and hard natural stone. Featuring a 71 mm diameter and a 400 mm working length, this wet core drill is ideal for creating clean penetrations for plumbing, heating, and drainage pipes in solid walls and floors. The laser-welded diamond segments offer exceptional resistance against detachment and ensure high durability during demanding drilling tasks. Equipped with a standard 5/4" unc threaded connection, this core bit attaches securely to compatible wet diamond drill motors, preventing overheating while delivering fast, controlled progress on every job.

Product information FAQ

€178.40

In stock - tax incl.

Key features according to our expert

Diameter: 71 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: 71 mm
Length: 400 mm
Connection size (machine): 1 1/4"

Brand CARAT
02757026
EAN 8714452022818
Supplier number CARAT EB07142020

Frequently asked questions about this product

Answered by specialists

Which materials is this diamond core bit suitable for?: It is designed for wet drilling in reinforced concrete, plain concrete, and hard natural stone.
What connection size does this Carat core bit have?: The core bit features a 1 1/4" UNC (5/4") connection for compatible core drilling machines.
Can you use this core bit for dry drilling?: No, this model is exclusively designed for wet drilling with water cooling.
What are the dimensions of this diamond core bit?: It has a 71 mm diameter and a 400 mm working length (420 mm total length).
How are the diamond segments attached?: The segments are laser-welded to ensure high durability and prevent segment detachment.