# Twist drill bit Irwin 10501991 — Ø 1.2 cm, for rotary hammer, 1 pc

**URL:** https://aio.lv/en/product--irwin-10501991--4906819
**Data updated:** 2026-03-07 15:04 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10501991
**EAN:** 5709131025153
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10501991--4906819

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

Irwin twist drill bit model 10501991, single-piece Ø 1.2 cm designed for use with a rotary hammer. This metal twist drill bit is suitable for standard drilling operations where a rotary hammer is required. Use cases include drilling into masonry or concrete when compatible with the tool; supplied as one drill bit for replacement or single-job use.

## Long description

Irwin twist drill bit model 10501991 is a single-piece Ø 1.2 cm drill intended for use with rotary hammers. Designed for standard drilling in masonry and concrete where an SDS-compatible rotary hammer is used, this metal twist drill bit features a patented extra-short carbide tip, a single-flute geometry and a shank compatible with SDS rotary hammer chucks. Supplied as one piece, it is suitable for replacement or single-job use.
Advantages
The patented extra-short carbide tip concentrates up to 80% of the workload on the head for improved durability and higher drilling speed. The concave cutting angles and self-centering tip give easier control and faster penetration while the brazed carbide tip, attached at high temperature, provides enhanced heat resistance and longer life. The new single-flute design increases waste removal capacity by approximately 28%, reducing clogging by clearing dust directly into the flute and enabling up to 20% faster drilling compared with conventional designs. The shank is compatible with SDS rotary hammers for straightforward mounting.
Suitable for
 Drilling holes in concrete and masonry with an SDS rotary hammer
 Replacement bit for repair and construction work
 Single-job or occasional professional drilling tasks
Key specifications
 Diameter: 1.2 cm
 Tip material: brazed carbide tip with high-temperature brazing
 Tip design: extra-short, self-centering carbide head with concave cutting angles
 Flute design: single flute for increased waste removal capacity
 Performance: up to 20% faster drilling versus conventional designs
 Compatibility: SDS rotary hammer shank fit
 Package quantity: 1 piece
How to use
Install the drill bit into an SDS-compatible rotary hammer according to the tool manufacturer’s instructions, ensuring the bit is fully seated and locked. Use appropriate drilling speed and percussion settings for masonry or concrete and apply steady, even pressure without forcing the bit. Periodically withdraw the bit to clear accumulated dust from the hole and flute. Allow the tool and bit to cool when performing extended or heavy-duty drilling to preserve the brazed carbide tip and overall bit life.
Usage recommendations
Use appropriate personal protective equipment including eye protection, hearing protection and dust mask when drilling masonry or concrete. Match drill speed and impact settings to the material being drilled, and avoid excessive side loading to prolong tip life. Replace the bit when wear reduces cutting efficiency or when the self-centering action is compromised.

## Specifications

| Feature | Value |
|---|---|
| Length | 160 mm |
| Proper use | Rotary hammer |
| Working length | 100 mm |
| Suitable for materials | Concrete, Masonry |
| Drill bit diameter | 12 mm |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Twist drill bit Irwin 10501991 Ø 1.2 cm 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 — 47 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 22.06.2026 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/4906819/59176489_large.webp