# Twist drill bit set Irwin 10502508 — 2 pcs, 1.5 mm diameter

**URL:** https://aio.lv/en/product--irwin-10502508--11721350
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** Irwin
**Manufacturer code:** 10502508
**EAN:** 5709131282570
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--irwin-10502508--11721350

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

Irwin 10502508 is a set of two twist drill bits with a diameter of 1.5 mm designed for drilling tasks. These straight-shank bits are intended for creating small-diameter holes in materials compatible with twist drills. Suitable for precision work, light metal, wood, plastics and general maintenance where 1.5 mm holes are required.

## Long description

Irwin 10502508 — 2 pcs, 1.5 mm diameter is a set of two precision HSS cobalt twist drill bits designed for making small-diameter holes. Each bit has a 1.5 mm cutting diameter and a 40 mm overall length with a cylindrical (straight) shank, manufactured to DIN 338 standards. The bits incorporate 5% cobalt for improved heat and abrasion resistance and a heavy-duty web for enhanced strength. A 135° split point reduces walking and starts drilling immediately, making these bits suitable for demanding drilling tasks in a variety of materials.
Advantages
The 5% cobalt composition increases hardness and thermal stability compared with standard HSS, extending life when drilling alloyed and hardened steels. The heavy-duty web construction adds rigidity and reduces breakage during side loads. The 135° split point improves centering and reduces the need for pilot holes, while the straight shank ensures compatibility with most drill chucks. Manufactured to DIN 338, these bits offer consistent geometry and dimensions for repeatable results.
Suitable for
 Drilling small precision holes in alloyed steel and stainless steel
 Metalworking tasks requiring heat-resistant bits
 Maintenance and repair work with limited access or small-diameter requirements
 Drilling in hard or heat-treated metals where abrasion resistance is needed
Key specifications
 Type: Twist drill bit, HSS with 5% cobalt
 Diameter: 1.5 mm
 Overall length: 40 mm
 Point angle and style: 135° split point
 Shank type: Cylindrical (straight) shank
 Quantity: 2 pieces
 Standards: Manufactured to DIN 338 geometry
 Typical suitable materials: Alloyed steel, stainless steel, general metal
How to use
Secure the cylindrical shank of the 1.5 mm Irwin drill bit in an appropriate drill chuck, ensuring proper concentricity. Mark and, if necessary, center-punch the drilling position to aid the 135° split point in locating the start. Use appropriate cutting speed and feed for small-diameter cobalt HSS bits—moderate speeds for steels and harder alloys and higher speeds for softer metals—while applying steady, even pressure. Use cutting fluid or coolant when drilling alloyed or hardened steels to reduce heat buildup and extend bit life. Withdraw the bit periodically to clear chips when drilling deep holes or when chip evacuation is restricted.
Usage recommendations
For best results when drilling hardened or alloyed steels, use low to moderate spindle speeds, apply suitable coolant, and avoid excessive side loading. Replace the bit if excessive wear or chipping of the cutting edges is visible to maintain hole quality and reduce the risk of breakage.

## Specifications

| Feature | Value |
|---|---|
| Length | 40 mm |
| Proper use | Drill |
| Carrying case | Yes |
| Working length | 18 mm |
| Suitable for materials | Alloyed steel, Metal, Stainless steel |
| Drill bit diameter | 1.5 mm |
| Shank shape | Cylindrical shank |
| DIN compliance | 338 |
| Point angle | 135 ° |
| Drill bit material | High-Speed Steel (HSS) |
| Number of drill bits | 2 pc(s) |
| Drill bit type | Twist drill bit |

## FAQ

### How much does the Twist drill bits Irwin 10502508, 1.5 mm, 2 pcs cost, and is it available for purchase?

The price is 3.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 40 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 Thursday 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

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