# Drill bits Proline 78025K — metal bits, Ø 2.5 mm, length 57 mm, set of 3

**URL:** https://aio.lv/en/product--proline-78025k--11719042
**Data updated:** 2026-03-08 11:21 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78025K
**EAN:** 5903755153869
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 4.54 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78025k--11719042

## 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

Proline 78025K is a set of three metal drill bits with a diameter of 2.5 mm and length 57 mm. Designed for drilling metal surfaces, this compact set provides consistent hole precision for light fabrication, repair work and installation tasks. Suitable for use with hand drills and drill presses where a small-diameter metal bit is required.

## Long description

Proline 78025K is a set of three metal drill bits with a 2.5 mm diameter and 57 mm overall length, designed specifically for drilling metal surfaces. Manufactured from high-speed steel with 5% cobalt (HSS-Co), these bits are intended for applications requiring high temperature resistance and consistent hole accuracy. The bits are fully ground to ensure rectilinearity and precision, and the 135° point angle with chamfering adjustment facilitates fast, controlled penetration and reduced walking at the start of drilling.
Advantages
The HSS steel with 5% cobalt increases heat resistance and wear life when working in high-alloy and difficult-to-machine metals. Full grinding of the drill flutes produces high concentricity and straight holes, while the 135° point geometry with chamfering adjustment helps shorten setup time and improves centring on metal surfaces. The 57 mm overall length balances reach and rigidity for light fabrication and repair tasks.
Suitable for
 Drilling holes in high-alloy steels, stainless and acid-resistant steels
 Working with titanium and creep-resisting steels
 Light fabrication, maintenance and installation tasks
 Use in hand drills and drill presses where a small-diameter metal bit is required
Key specifications
 Material: High-speed steel with 5% cobalt (HSS-Co)
 Diameter: 2.5 mm
 Overall length: 57 mm
 Point angle: 135° with chamfering adjustment
 Manufacturing: Fully ground flute and tip for accuracy
 Suitable work materials: High-alloy, stainless, acid-resistant, titanium, creep-resisting steels and cast iron (durability above 900 N/m²)
 Packaging: Blister pack containing three pieces of this size
How to use
Select the 2.5 mm Proline 78025K bit for the intended metal and secure the workpiece. Use an appropriate cutting fluid for metal drilling to reduce heat and improve chip evacuation. Fit the bit into the drill chuck, ensure it is clamped concentrically, and start at low speed to establish the centre using the 135° point geometry; increase speed as needed while maintaining steady feed. Apply consistent pressure without overloading the bit and clear chips periodically to maintain cutting efficiency and accuracy.
Usage recommendations
For best results when drilling high-alloy or stainless steels, use a coolant or cutting oil, moderate drilling speeds, and allow the bit to cool between prolonged passes. Inspect bits for wear and replace them when the cutting edge becomes rounded or performance declines to maintain hole quality and reduce risk of breakage.

## Specifications

| Feature | Value |
|---|---|
| Length | 57 mm |
| Metal drill bits diameter | 2.5 |
| Number of drill bits | 3 pc(s) |

## FAQ

### How much does the Drill bits Proline 78025K Ø2.5 mm, 57 mm, 3 pcs cost, and is it available for purchase?

The price is 5.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 100 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 Proline 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 Proline 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/11719042/67196502_large.webp