# Drill Bit DeWalt DT4909 cobalt HSS 6.5 mm, single pack

**URL:** https://aio.lv/en/product--dewalt-dt4909--10538771
**Data updated:** 2026-03-07 17:52 (EET)
**Category:** Drill Bits
**Manufacturer:** DeWalt
**Manufacturer code:** DT4909
**EAN:** 5035048094730
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dewalt-dt4909--10538771

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

DeWalt DT4909 is a 6.5 mm cobalt HSS drill bit supplied as a single pack. Designed for drilling in hard metals, the cobalt alloy and high-speed steel construction provide increased heat resistance and wear performance compared with standard HSS bits. Suitable for metalworking, industrial maintenance and repair tasks where durable, high-temperature-resistant bits are required.

## Long description

DeWalt DT4909 is a 6.5 mm cobalt HSS drill bit supplied as a single pack, engineered for drilling through hard metals. The combination of high-speed steel and cobalt alloy increases heat resistance and edge retention compared with standard HSS bits, making this drill bit suitable for demanding metalworking operations and industrial maintenance tasks where tool durability and consistent performance are required.
Advantages
The cobalt HSS composition offers improved hardness and thermal stability, reducing wear during prolonged drilling into stainless steel and other hard alloys. The 6.5 mm diameter provides a balance between rigidity and cutting speed for general metal drilling. As a single pack, the bit is convenient for replacements or stocking specific sizes for repair and maintenance kits. The bit is compatible with standard drill chucks and offers reliable concentricity for clean, accurate holes.
Suitable for
 Drilling stainless steel and hardened steel
 Industrial maintenance and machinery repair
 Metal fabrication and workshop tasks
 Repairing automotive components and construction fittings
Key specifications
 Material: cobalt-enhanced high-speed steel (HSS)
 Diameter: 6.5 mm
 Pack quantity: single piece
 Tip style: designed for metal cutting (split point geometry typical of HSS cobalt bits)
 Compatibility: fits standard keyed and keyless drill chucks
How to use
Secure the 6.5 mm cobalt HSS bit in the drill chuck and ensure it is tightened properly to prevent slippage. Mark the drilling point and, where possible, use a center punch to guide the bit. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material while maintaining steady pressure. Use cutting fluid or coolant when drilling stainless steel and other heat-sensitive alloys to extend tool life and improve chip evacuation. After use, clean chips and residue from the bit and store it in a dry place to avoid corrosion.
Usage recommendations
For best results when drilling hard metals, use a lower drill speed, apply cutting fluid, and avoid excessive side pressure. Replace the bit if signs of significant wear or chipping appear to maintain hole quality and reduce risk of workpiece damage.

## FAQ

### How much does the DeWalt DT4909 cobalt HSS drill bit 6.5 mm cost, and is it available for purchase?

The price is 9.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 17 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 10.07.2026 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 DeWalt 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 DeWalt 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

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