# Drill bit Irwin 4 mm twist 10501943 for rotary hammer 1 pc

**URL:** https://aio.lv/en/product--irwin-5709131019282--10996141
**Data updated:** 2026-03-07 18:12 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 5709131019282
**EAN:** 5709131019282
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-5709131019282--10996141

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Irwin twist drill bit 10501943 with 4 mm diameter for use with rotary hammer tools. Sold as a single piece, this metal twist bit is designed for drilling precise 4 mm holes in compatible materials when used with appropriate rotary hammer settings. Suitable for repair, installation and light construction tasks requiring a compact drill tip.

## Long description

Irwin twist drill bit 10501943 with a 4 mm diameter is designed for use with rotary hammers and SDS-compatible chucks. Supplied as a single piece, this compact metal twist bit features Irwin’s patented extra-short carbide tip and a single-flute geometry to provide faster, cleaner drilling of 4 mm holes in compatible materials. The brazed carbide tip and reinforced head concentrate cutting forces to improve durability and reduce clogging, making the bit suitable for repair, installation and light construction tasks that require a compact, precise drill tip.
Advantages
The patented extra-short carbide tip transfers up to 80% of the workload to the head for increased durability and drilling speed. The concave, self-centering cutting geometry improves control and helps drill consistently straight holes. A single-flute design increases waste removal capacity by about 28%, clearing dust and debris into the flute to reduce clogging. High-temperature brazing at around 1000° Celsius with bronze paste secures the carbide tip to the body, enhancing heat resistance and extending service life. The bit is engineered to drill approximately 20% faster while maintaining high durability and fits all SDS rotary hammers.
Suitable for
Drilling 4 mm diameter holes in masonry and similar substrates when using a rotary hammer
Light construction, repair and installation tasks requiring compact, precise holes
Working in confined spaces where a short drill tip is an advantage
Key specifications
Diameter: 4 mm
Tip: extra-short carbide tip with brazed joint
Flute design: single flute for improved waste removal
Compatibility: fits SDS rotary hammers
Performance: engineered for up to 20% faster drilling and improved clog resistance
Use case: suitable for masonry and similar materials when using appropriate rotary hammer settings
How to use
Select an appropriate rotary hammer with an SDS-compatible chuck and set the tool to the recommended mode for the target material (rotary hammer/drilling with hammer action if applicable). Secure the workpiece, mark the drilling position and position the 4 mm Irwin twist drill bit perpendicular to the surface. Apply steady pressure and allow the bit’s carbide tip and single-flute design to remove debris; avoid excessive force or prolonged dwell at a single point. Withdraw the bit periodically to clear accumulated dust if drilling deep holes. After use, clean the flute and store the bit in a dry place to preserve the brazed carbide tip.
Usage recommendations
Use appropriate personal protective equipment (safety glasses, gloves, dust mask) and follow the rotary hammer manufacturer’s speed and mode recommendations for the material. For best results in masonry, start with a slow approach to establish the hole and then maintain steady drilling pressure; avoid using the bit in materials or modes for which it is not intended.

## Specifications

| Feature | Value |
|---|---|
| Length | 110 mm |
| Proper use | Rotary hammer |
| Working length | 50 mm |
| Suitable for materials | Concrete, Masonry |
| Drill bit diameter | 4 mm |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Drill bit Irwin 10501943 4 mm cost, and is it available for purchase?

The price is 5.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 07.07.2026 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/10996141/61577586_large.webp