What is this Carat extension used for?

You use this extension to extend the drilling depth of diamond core drills with a 1/2" connection by 200 mm.

What thread connections does this extension have?

The extension features a 1/2" internal thread on the machine side and a 1/2" external thread on the core drill side.

What is the minimum drilling diameter required?

For 1/2" extensions, Carat specifies a minimum drilling diameter of 31 mm so the extension clears the borehole freely.

What material is this extension made of?

This extension is made of robust steel to provide maximum stability and reliability during intensive drilling tasks.

CARAT BC21200000 extension 1/2" 200 mm steel

Name: CARAT BC21200000 extension 1/2" 200 mm steel
Brand: CARAT
SKU: 04044543
Price: 38.6 EUR
Availability: PreOrder

Supplier number: CARAT BC21200000 | EAN 8714452992777

Recommended Retail Price €53.24

38.60 tax incl.

€31.90 excl. VAT (incl. all environmental contributions)

On order: delivered from 07/10/2026

Delivery by DHL

✆ Talk to a specialist

Greater drilling depth with Carat

Practical benefits

Extended reach made easy: The 200 mm length allows you to effortlessly drill deeper holes through thick walls and solid materials.
Heavy-duty steel build: Crafted from high-grade steel, it withstands demanding torsional forces during intensive diamond coring operations.
Secure threaded fit: The 1/2" female-to-male connection ensures a tight and stable mount between your drill and diamond core bit.

In a nutshell

The right choise for

With the Carat BC21200000 extension, you effortlessly extend the reach of your diamond core drill bit by 200 mm. It is the ideal solution when standard drill lengths fall short while penetrating thick concrete walls, floors, or working in recessed installation locations. Built from heavy-duty steel, it withstands demanding torsional forces during intensive coring jobs to deliver lasting reliability. The precise 1/2" internal and external threads provide a solid, secure connection between your drilling machine and diamond core bit. Suitable for drill diameters from 31 mm upward, this extension gives you the extra depth needed to complete challenging drilling tasks with ease.

Product information FAQ

€38.60

tax incl.

Key features according to our expert

Accessory/Part type: Extension piece
Length: 200 mm
Connection type: External thread
Tool holder size: 1/2"
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: 200 mm
Connection type: External thread
Tool holder size: 1/2"
Tool holder type: Internal thread

Brand CARAT
04044543
EAN 8714452992777
Supplier number CARAT BC21200000

Frequently asked questions about this product

Answered by specialists

What is this Carat extension used for?: You use this extension to extend the drilling depth of diamond core drills with a 1/2" connection by 200 mm.
What thread connections does this extension have?: The extension features a 1/2" internal thread on the machine side and a 1/2" external thread on the core drill side.
What is the minimum drilling diameter required?: For 1/2" extensions, Carat specifies a minimum drilling diameter of 31 mm so the extension clears the borehole freely.
What material is this extension made of?: This extension is made of robust steel to provide maximum stability and reliability during intensive drilling tasks.