# Drill Bit Irwin 10503858 HSS Pro Series 12 mm

**URL:** https://aio.lv/en/product--irwin-10503858--5027544
**Data updated:** 2026-03-07 15:10 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10503858
**EAN:** 5706915938586
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 36.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 30.16 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10503858--5027544

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

Irwin 10503858 is a 12 mm HSS Pro Series drill bit designed for metalworking and general-purpose drilling. Made from high-speed steel (HSS), it provides durability and heat resistance for drilling through steel, iron and other metals. Suitable for use with hand drills and drill presses in workshop, construction and maintenance tasks.

## Long description

Irwin 10503858 HSS Pro Series 12 mm is a high-speed steel drill bit designed for metalworking and general-purpose drilling. Manufactured by Irwin, this 12 mm HSS bit is intended for creating accurate holes in steel, iron and other common metals. Its HSS construction provides wear resistance and improved heat tolerance, making it suitable for repetitive drilling tasks with hand drills and drill presses in workshops, maintenance and construction environments.
Advantages
The HSS material provides durability and resistance to softening under heat, maintaining edge retention during moderate to heavy use. The 12 mm diameter offers a balance between hole size and rigidity, reducing bit wander during start-up. Precision ground flutes ensure efficient chip removal and steady drilling performance. The bit is compatible with standard drill chucks and mounting systems used in handheld drills and drill presses.
Suitable for
 Drilling holes in mild steel and cast iron
 General-purpose metal fabrication and repair
 Workshop and maintenance tasks with hand drills and drill presses
 Construction tasks requiring metal hole preparation
Key specifications
 Material: High-speed steel (HSS)
 Diameter: 12 mm
 Intended use: Metal drilling (steel, iron and similar materials)
 Shank type: Straight round shank compatible with standard chucks
 Flute design: Spiral flutes for chip evacuation and cooling
How to use
Select an appropriate drilling speed for 12 mm HSS tooling and clamp the workpiece securely. Mark the drilling position and center-punch if necessary to prevent wandering. Fit the bit into the drill chuck and tighten securely. Begin drilling at a moderate speed, applying steady pressure; reduce speed and apply cutting fluid or coolant when drilling thicker or tougher metals to extend bit life. Withdraw the bit periodically to clear chips and allow cooling during prolonged operations.
Usage recommendations
Use suitable cutting fluid when drilling steel to reduce heat and improve finish. For accurate hole placement, use center-punching and a pilot drill when starting large diameter holes. Inspect the bit for wear or chipping before use and replace when cutting performance degrades.

## FAQ

### How much does the Irwin HSS Pro Series Drill Bit 12 mm 10503858 cost, and is it available for purchase?

The price is 36.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 14.07.2026 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/5027544/36029016_large.webp