# Drill Bit Extension Diam 300 mm for 1 1/4" Diamond Core Bits — Diam

**URL:** https://aio.lv/en/product--diam-dir30014--11718716
**Data updated:** 2026-03-08 11:20 (EET)
**Category:** Drill Bits
**Manufacturer:** Diam
**Manufacturer code:** DIR3001/4
**EAN:** 3541340008525
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 43.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--diam-dir30014--11718716

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Extension rod for diamond core drill bits by Diam, 300 mm length designed to fit 1 1/4" (one and one quarter inch) coring drills. Provides additional reach for core drilling in concrete, masonry and similar materials. Compatible with matching 1 1/4" diamond cores, used for deep or hard-to-reach drilling tasks and installation work.

## Long description

Diam Drill Bit Extension, 300 mm length, is designed to extend the reach of 1 1/4" diamond core bits for core drilling in concrete, masonry and similar construction materials. The extension rod provides a rigid connection to compatible 1 1/4" diamond cores and allows drilling at greater depths or into recessed and hard-to-reach areas without changing the primary coring bit.
Advantages
The extension increases usable drilling depth while preserving drilling accuracy and stability. Constructed to work with standard 1 1/4" diamond cores, it reduces the need for repositioning or multiple tool changes on site. Its robust design helps transfer torque efficiently from the drill to the core bit, minimising wobble and wear during prolonged operations.
Suitable for
Deep core drilling in concrete and reinforced concrete
Drilling in masonry, brick and stone
Accessing recessed or hard-to-reach drilling points
Installation work requiring extended reach for plumbing, electrical or HVAC penetrations
Key specifications
Length: 300 mm
Compatible core diameter connection: 1 1/4"
Application material: concrete, masonry, brick, stone
Function: extension rod for diamond core drilling to increase reach
How to use
Attach the extension firmly between the drill machine arbor and the 1 1/4" diamond core bit following the drill and core manufacturer guidance. Ensure all connections are tightened and locked before starting the machine. Use appropriate drilling speed, feed pressure and water cooling as recommended for diamond core drilling in the chosen material. Periodically stop to clear slurry and check the connection for tightness during extended drilling sessions.
Usage recommendations
Use the Diam 300 mm extension together with matching 1 1/4" diamond core bits and follow safety procedures: personal protective equipment, correct coolant/water supply, appropriate drill machine capacity and secure workpiece clamping. Avoid excessive lateral forces and monitor for overheating to extend component life.

## FAQ

### How much does the Diam 300 mm Extension for 1 1/4" Core Bits cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Diam products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Diam service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11718716/67100059_large.webp