# Drill bit Proline 78090K, metal, Ø 9 mm, length 125 mm, 1 pc

**URL:** https://aio.lv/en/product--proline-78090k--11719870
**Data updated:** 2026-03-08 11:22 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78090K
**EAN:** 5903755154088
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78090k--11719870

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Single metal drill bit Proline 78090K with a 9 mm diameter and 125 mm overall length. Designed for drilling metal, this straight shank bit comes as one piece and is suitable for manual and machine use in metalworking, maintenance and repair tasks where precise 9 mm holes are required.

## Long description

The Proline 78090K metal drill bit, 9 mm in diameter and 125 mm in overall length, is a single straight-shank cutting tool made for precise metal drilling. Manufactured from high-class high-speed steel (HSS) with 5% cobalt and produced by full grinding, the bit provides accurate, straight holes and increased wear resistance. A 135° point angle with chamfering adjustment supports fast penetration and reliable centring on metal surfaces. Supplied as one piece in a blister pack, this drill bit is suitable for both hand-held and machine drilling applications.
Advantages
The cobalt-alloyed HSS construction delivers improved hardness and high temperature resistance, extending tool life during prolonged or demanding drilling. Ground flute geometry and straight shank manufacturing ensure high accuracy and rectilinearity of holes while the 135° point reduces walking and facilitates fast drilling starts. The design is optimized for challenging materials such as stainless, acid-resistant and high-alloy steels, titanium and cast irons, offering consistent performance in maintenance, repair and precision metalworking tasks.
Suitable for
Drilling precise Ø 9 mm holes in steel and stainless steel
Work with high-alloy and heat-resistant metals, including titanium
Maintenance and repair tasks on machinery and metal structures
Bench and hand-held drilling where straight shank bits are required
Key specifications
Diameter: 9 mm
Overall length: 125 mm
Point angle: 135° with chamfering adjustment
Material: high-speed steel (HSS) with 5% cobalt
Manufacturing: fully ground flutes for high accuracy
Intended materials: high-alloy steels, stainless and acid-resistant steels, titanium, cast iron and other hard-to-machine metals
Shank type: straight shank for machine and manual use
How to use
Select an appropriate cutting speed and feed for the work material, secure the workpiece and use appropriate clamping. Fit the 9 mm straight-shank drill into the chuck or collet, ensure the drill is perpendicular to the surface for best rectilinearity, and apply steady pressure. Use coolant or cutting fluid when drilling high-alloy or stainless steels to reduce temperature and extend tool life. Retract periodically on deep holes to clear chips and avoid jamming.
Usage recommendations
Use medium to low cutting speeds and consistent coolant flow when working with stainless, high-alloy or titanium materials. Inspect the drill for wear and re-sharpen or replace when hole quality degrades to maintain accuracy and prevent workpiece damage.

## Specifications

| Feature | Value |
|---|---|
| Length | 125 mm |
| Metal drill bits diameter | 9 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 78090K Ø 9 mm, 125 mm cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 200 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 07.07.2026 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/11719870/67194604_large.webp