Which materials is this diamond core drill suitable for?

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

What machine connection does this core drill use?

It has a standard 5/4" UNC (1 1/4") female thread connection for diamond drilling machines.

Does this core drill require water cooling?

Yes, this model is engineered specifically for wet drilling with water supply.

What are the diameter and drilling length of this core bit?

It features a 91 mm diameter and an overall useful length of 420 mm (400 mm drilling depth).

CARAT EB09142020 Brilliant concrete drill bit 91 x 420mm 5/4" wet

Name: CARAT EB09142020 Brilliant concrete drill bit 91 x 420mm 5/4" wet
Brand: CARAT
SKU: 02757034
Price: 256.4 EUR
Availability: InStock

Supplier number: CARAT EB09142020 | EAN 8714452022931

Recommended Retail Price €320.65

256.40 tax incl.

€211.90 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered as of 05/10/2026
Free shipping
Delivery by DHL

✆ Talk to a specialist

Accurate wet core drilling in reinforced concrete with Carat

Practical benefits

Fast and smooth starting: Laser-welded segments allow you to start drilling quickly and cleanly through hard stone and reinforced concrete.
Efficient water cooling performance: Continuous wet cooling prevents overheating during heavy drilling tasks and noticeably extends core life.
Standard secure machine fitment: The 5/4" UNC connection ensures you mount the core bit firmly onto compatible drilling machines.

In a nutshell

The right choise for

With the Carat Brilliant diamond core drill EB09142020, you drill clean and precise holes through reinforced concrete and hard stone without impact damage. Its laser-welded segments deliver a fast and smooth start, making it ideal for creating pipe and conduit penetrations on commercial and residential job sites. Designed for wet core drilling with active water cooling, this core bit prevents overheating and significantly extends segment life during demanding tasks. Featuring a 91 mm diameter, a 420 mm working length, and a standard 5/4" unc connection, it mounts securely onto your compatible core drill for dependable performance.

Product information FAQ

€256.40

In stock - tax incl.

Key features according to our expert

Diameter: 91 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: 91 mm
Length: 400 mm
Connection size (machine): 1 1/4"

Brand CARAT
02757034
EAN 8714452022931
Supplier number CARAT EB09142020

Frequently asked questions about this product

Answered by specialists

Which materials is this diamond core drill suitable for?: It is designed for wet drilling in reinforced concrete and hard stone types.
What machine connection does this core drill use?: It has a standard 5/4" UNC (1 1/4") female thread connection for diamond drilling machines.
Does this core drill require water cooling?: Yes, this model is engineered specifically for wet drilling with water supply.
What are the diameter and drilling length of this core bit?: It features a 91 mm diameter and an overall useful length of 420 mm (400 mm drilling depth).