What is the Carat BC22010000 extension used for?

This 100 mm steel extension is used to increase the drilling depth of diamond core drills with a 5/4" UNC connection.

What thread connection does this extension have?

The extension features a 5/4" (1 1/4" UNC) female thread on the machine side and a 5/4" male thread on the drill bit side.

What material is this extension made of?

It is made of sturdy steel, built to handle heavy loads during diamond core drilling.

How much extra depth does this extension provide?

This adapter extends the usable drilling depth by exactly 100 mm.

Does this extension fit all diamond core drills?

It fits all diamond core drill motors and core bits equipped with a standard 5/4" UNC thread.

CARAT BC22010000 extension 5/4" 100 mm steel

Name: CARAT BC22010000 extension 5/4" 100 mm steel
Brand: CARAT
SKU: 04044544
Price: 35.95 EUR
Availability: PreOrder

Supplier number: CARAT BC22010000 | EAN 8714452992791

Recommended Retail Price €49.61

35.95 tax incl.

€29.71 excl. VAT (incl. all environmental contributions)

On order: delivered from 08/10/2026

Ordered before 20:00 - delivered as of 08/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

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Extended drilling with Carat

Practical benefits

Effortless extra drilling reach: With a 100 mm length, you easily drill deeper into concrete floors and thick walls.
Solid durable steel build: The heavy-duty steel construction delivers full power transfer, letting you drill steadily without unwanted flex.
Universal 5/4" UNC connection: Standard 5/4" threading enables you to fit the extension securely between your core drill and bit.

In a nutshell

The right choise for

With the Carat BC22010000 extension, you effortlessly extend the reach of your diamond core drill. When standard drill bits fall short on thick concrete floors, solid walls, or deep penetrations, this 100 mm steel adapter provides the practical solution. Its heavy-duty steel construction reliably handles high mechanical loads, delivering stable and low-vibration drilling throughout tough jobs. Thanks to the standard 5/4" unc connection with female thread on the machine side and male thread on the bit side, it fits securely between your core drill motor and bit. This allows you to achieve deeper drilling targets with full precision, without the need for custom-length core bits.

Product information FAQ

€35.95

tax incl.

Key features according to our expert

Accessory/Part type: Extension piece
Length: 100 mm
Connection type: External thread
Tool holder size: 1 1/4"
Tool holder type: Internal thread

Product description:

Extensions
For use of extensions 1/2 "G: minimum bore diameter 31 mm
For usage of extensions 5/4 "UNC: minimum bore diameter 51 mm

All Features

Accessory/part type: Extension piece
Length: 100 mm
Connection type: External thread
Tool holder size: 1 1/4"
Tool holder type: Internal thread

Brand CARAT
04044544
EAN 8714452992791
Supplier number CARAT BC22010000

Frequently asked questions about this product

Answered by specialists

What is the Carat BC22010000 extension used for?: This 100 mm steel extension is used to increase the drilling depth of diamond core drills with a 5/4" UNC connection.
What thread connection does this extension have?: The extension features a 5/4" (1 1/4" UNC) female thread on the machine side and a 5/4" male thread on the drill bit side.
What material is this extension made of?: It is made of sturdy steel, built to handle heavy loads during diamond core drilling.
How much extra depth does this extension provide?: This adapter extends the usable drilling depth by exactly 100 mm.
Does this extension fit all diamond core drills?: It fits all diamond core drill motors and core bits equipped with a standard 5/4" UNC thread.