# Irwin twist drill bit 4.5 mm, model 10502551, 1 piece

**URL:** https://aio.lv/en/product--irwin-10502551--11720926
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10502551
**EAN:** 05709131283058
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10502551--11720926

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Irwin twist drill bit (model 10502551) with a 4.5 mm diameter, supplied as a single piece. Designed for drilling holes in common materials using a hand or powered drill. Suitable for general-purpose metal, wood and plastic drilling where a standard straight-shank twist bit is required. Compatible with standard drill chucks.

## Long description

Irwin twist drill bit with a 4.5 mm diameter is a single-piece, general-purpose HSS cobalt bit designed for drilling a variety of metals and other common materials. The 5% cobalt alloy and heavy-duty web construction improve heat and wear resistance while preserving rigidity during demanding drilling tasks. The 135° split point reduces bit walking and starts cutting quickly, making the bit suitable for both hand-held and machine drills with standard chucks.
Advantages
The 5% cobalt composition provides enhanced resistance to heat and abrasion compared with standard high-speed steel bits, extending life in applications that generate elevated temperatures. The heavy-duty web increases bit strength and reduces breakage risk under side load, while the 135° split point ensures accurate positioning and immediate cutting action. Cylindrical shank design ensures compatibility with conventional drill chucks and straightforward clamping.
Suitable for
Drilling alloyed and hardened steels
Drilling stainless steel and other tough metals
General metalworking tasks in workshops and production environments
Occasional drilling in wood and engineering plastics when a metal-capable bit is required
Key specifications
Bit type: Twist drill
Diameter: 4.5 mm
Overall length: 80 mm
Material: High-speed steel with 5% cobalt
Point geometry: 135° split point for reduced walking
Shank type: Cylindrical shank for standard chucks
Pack quantity: 1 piece
How to use
Secure the cylindrical shank in a properly sized chuck and tighten firmly. Select suitable cutting speed and feed rate for the work material—lower speeds for hardened or stainless steels to reduce heat build-up. Use cutting fluid or coolant when drilling metals to extend bit life and improve chip evacuation. Apply steady, moderate pressure and avoid forcing the bit; retract periodically for chip clearance when drilling deep holes.
Usage recommendations
For best results on hardened or stainless steels, use reduced spindle speed, a quality cutting fluid, and light pecking cycles to control temperature and chip removal. Inspect the bit for dulling or chipping before use and replace when wear affects hole accuracy or increases torque. Store the bit in a protective case to prevent damage to the cutting edges.

## Specifications

| Feature | Value |
|---|---|
| Length | 80 mm |
| Proper use | Drill |
| Carrying case | Yes |
| Working length | 47 mm |
| Suitable for materials | Alloyed steel, Metal, Stainless steel |
| Drill bit diameter | 4.5 mm |
| Shank shape | Cylindrical shank |
| DIN compliance | 338 |
| Point angle | 135 ° |
| Drill bit material | High-Speed Steel (HSS) |
| Number of drill bits | 1 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Irwin twist drill bit 10502551 — 4.5 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 — 26 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 06.07.2026 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/11720926/67192769_large.webp