# Extension piece for diamond crowns 50 cm 1 1/4" Dedra HW4005

**URL:** https://aio.lv/en/product--dedra-hw4005--10904290
**Data updated:** 2026-02-24 11:01 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Dedra
**Manufacturer code:** HW4005
**EAN:** 5902628816856
**Warranty:** 1 Year
**Availability:** Available for order
**Price:** 79.49 €
**Prices and availability valid until:** 2026-08-04 23:59
**Price without VAT (21%):** 65.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dedra-hw4005--10904290

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 5.45 EUR |

## Summary description

Extension piece for diamond crowns by Dedra, model HW4005, length 50 cm with 1 1/4" connection. Designed to extend reach when using diamond cutting or drilling crowns on core drills and rotary equipment. Suitable for masonry and concrete applications where added reach is needed; provides a rigid link between tool and drill for precise cutting and drilling.

## Long description

Extension piece for diamond crowns 50 cm 1 1/4" Dedra HW4005 is a rigid extension rod designed to increase the working reach of diamond cutting and drilling crowns. The 50 cm length provides additional access for deep or hard-to-reach masonry and concrete drilling tasks, allowing users to maintain tool alignment and stability when connecting core bits to rotary or core drilling equipment.
Advantages
The extension piece offers a solid, vibration-minimizing connection that helps preserve cutting precision at extended depths. Its threaded 1 1/4" connection ensures compatibility with a range of diamond crowns and drilling machines using the same thread standard. Constructed for use with masonry and concrete, the extension maintains stiffness under load to reduce deviation and facilitate straighter holes and cuts.
Suitable for
 Extending reach for diamond cutting crowns during deep concrete or masonry cutting
 Core drilling where additional length is required to access recessed areas
 Renovation and construction tasks that demand precise alignment at depth
 Connecting to rotary and core drilling equipment that accept a 1 1/4" threaded interface
Key specifications
 Length: 50 cm
 Thread connection: 1 1/4" (female/male as required for system compatibility)
 Intended material use: masonry and concrete
 Function: rigid extension for diamond cutting and core drilling crowns
How to use
Attach the extension piece between the diamond crown and the drilling machine using the 1 1/4" threaded connection, ensuring threads are clean and undamaged before assembly. Tighten securely according to manufacturer torque recommendations for the drilling equipment to maintain alignment. Operate the drill at appropriate speed and feed rate for the crown and material; monitor for vibration or misalignment and stop to re-tighten or inspect connections if necessary.
Usage recommendations
Use the extension piece only with compatible diamond crowns and drilling equipment that accept a 1 1/4" connection. Inspect threads and the extension rod for wear or damage before each use. For safer and more accurate results in deep drilling, support the drill and use steady feed pressure; avoid excessive lateral forces that can bend the extension or damage the crown.

## FAQ

### How much does the Extension piece 50 cm 1 1/4" Dedra HW4005 cost, and is it available for purchase?

The price is 79.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 46 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 15.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Extension piece 50 cm 1 1/4" Dedra HW4005 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Dedra 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 Dedra 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/10904290/67584906_large.webp