# Irwin 10501944 Twist Drill Bit 4 mm

**URL:** https://aio.lv/en/product--irwin-10501944--12433177
**Data updated:** 2026-05-14 08:19 (EEST)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10501944
**EAN:** 5709131019350
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.49 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 5.36 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10501944--12433177

## 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 | 4.99 EUR |

## Summary description

The Irwin 10501944 is a 4 mm twist drill bit designed for efficient drilling applications. This high-quality tool is engineered for precision and durability, making it suitable for various drilling tasks. It provides reliable performance and clean results, ensuring it is an essential addition to any professional or DIY toolkit for consistent drilling operations.

## Long description

The Irwin 10501944 Speedhammer Plus twist drill bit is a high-performance tool specifically engineered for drilling into hard materials. With a 4 mm diameter and an SDS-plus shank, this drill bit is designed to provide stability and precision during intensive drilling operations. Its construction focuses on durability and efficient material removal, making it a reliable choice for both professional contractors and home improvement enthusiasts who require consistent results in masonry and concrete work.
Advantages
This drill bit features a unique single flute design that significantly improves the speed of dust extraction, which in turn reduces vibrations and prevents the tool from clogging during operation. The patented extra short drill bit head is engineered to handle the majority of the workload, which enhances the overall durability of the bit and allows for faster penetration into tough surfaces. By clearing drilling dust directly into the flute, the design minimizes friction and heat buildup, ensuring a longer service life and more efficient performance compared to standard drill bits.
Suitable for
Drilling into concrete
Masonry applications
Brick and block work
Granite drilling
This drill bit is not suitable for drilling into wood, metal, or plastic, as its geometry and SDS-plus shank are specifically optimized for masonry and concrete materials. Using this bit on inappropriate materials may result in poor hole quality or damage to the drill bit and the workpiece.
Key specifications
Type: Twist drill bit
Diameter: 4 mm
Length: 160 mm
Shank type: SDS-plus
Cutting edges: 2
Certification: PGM
To use the Irwin Speedhammer Plus drill bit, ensure your rotary hammer drill is set to the hammer-drilling mode. Insert the SDS-plus shank into the chuck until it clicks into place, ensuring a secure fit. Apply steady, moderate pressure while drilling to allow the bit to clear dust effectively. Avoid excessive force, as the design of the bit is intended to do the work efficiently without needing extreme pressure from the user.
What to consider before purchase
Verify that your power tool is compatible with an SDS-plus shank system.
Ensure the 4 mm diameter meets your specific project requirements.
Confirm the material you are drilling is compatible with masonry-grade bits.
For optimal performance and longevity, allow the drill bit to cool down periodically during heavy-duty use and ensure the SDS-plus chuck is kept clean and lightly lubricated.

## Specifications

| Feature | Value |
|---|---|
| Length | 160 mm |
| Proper use | Drill |
| Working length | 100 mm |
| Suitable for materials | Concrete, Masonry |
| Drill bit diameter | 4 mm |
| Shank shape | SDS-plus shank |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Irwin 10501944 Twist Drill Bit 4 mm cost, and is it available for purchase?

The price is 6.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 23 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. 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 Irwin 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 Irwin 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/12433177/68737653_large.webp