# Drill bits Proline 3 mm set, model 78030K — 3 pcs, length 61 mm

**URL:** https://aio.lv/en/product--proline-78030k--11719869
**Data updated:** 2026-03-08 11:22 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78030K
**EAN:** 5903755153876
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 5.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 4.95 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78030k--11719869

## 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

Set of three Proline metal drill bits, model 78030K, each with a 3 mm diameter and 61 mm length. Designed for drilling metal and other hard materials in general workshop and DIY tasks. Includes three identical bits suitable for handheld drills and drill presses; useful for precision hole making, repair, and assembly work.

## Long description

Set of three Proline metal drill bits, each 3 mm in diameter and 61 mm in length, designed for precise drilling in metal and other hard materials. Manufactured from high-class HSS steel with 5% cobalt and produced entirely by grinding, these bits deliver accurate, straight holes and high temperature resistance. The 135° point angle with chamfering adjustment enables efficient cutting and faster marking and drilling operations. Supplied in a blister pack, the set is suitable for handheld drills and drill presses used in workshop and DIY tasks such as repair, assembly and precision hole-making.
Advantages
The cobalt-alloyed HSS construction provides increased hardness and wear resistance compared with standard HSS, ensuring longer tool life when working with high-alloy and stainless steels. Fully ground flutes and tips guarantee high accuracy and rectilinearity of holes, while a 135° point angle reduces walking and improves centring on the workpiece. High temperature resistance allows sustained performance under heavy cutting conditions. The compact blister packaging keeps bits organised and protected between uses.
Suitable for
Drilling holes in high-alloy, stainless and acid-resistant steels
Work with titanium and creep-resisting steels
General metalworking, repair and assembly tasks
Use in handheld drills and drill presses for precision holes
Key specifications
Quantity: 3 pieces
Diameter: 3 mm
Overall length: 61 mm
Material: high-speed steel (HSS) with 5% cobalt
Point angle: 135° with chamfering adjustment
Manufacturing method: fully ground flutes and tips for high accuracy
Suitable for high-temperature cutting and difficult-to-machine materials
How to use
Select the appropriate drill speed and clamping method for the workpiece material, secure the workpiece to prevent movement, and fit the 3 mm bit firmly in the drill chuck. For stainless, high-alloy or titanium materials, use moderate cutting speeds and apply cutting fluid to control temperature and extend bit life. Start drilling at low speed to establish a centred hole, then increase speed gradually while maintaining steady feed pressure. After drilling, retract the bit periodically to clear chips and prevent overheating.
Usage recommendations
For best results when drilling stainless and other difficult-to-machine materials, use a suitable cutting fluid, moderate speeds, and steady feed. Replace bits when wear or chipping reduces accuracy. Store the set in its blister pack to protect the ground cutting edges and maintain organisation.

## Specifications

| Feature | Value |
|---|---|
| Length | 61 mm |
| Metal drill bits diameter | 3 |
| Number of drill bits | 3 pc(s) |

## FAQ

### How much does the Proline drill bits 78030K — 3 mm, 3 pcs 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 — 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 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/11719869/67194610_large.webp