# Drill bit Proline 79051K — solid metal, Ø 5.1 mm, length 86 mm, 1 pc

**URL:** https://aio.lv/en/product--proline-v31ac-79051k--11720309
**Data updated:** 2026-03-08 11:23 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** V31AC-79051K
**EAN:** 5903755153647
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 3.30 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-v31ac-79051k--11720309

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Single Proline 79051K metal drill bit with a cutting diameter of 5.1 mm and overall length of 86 mm. Designed for drilling metal, this 1-piece bit suits handheld and drill-press use for general metalworking tasks, hole preparation, and repair jobs where a 5.1 mm pilot or through-hole is required.

## Long description

Single Proline 79051K metal drill bit with a 5.1 mm cutting diameter and an overall length of 86 mm. Manufactured from refined high-speed steel (HSS) with ground cutting edges and a 135° point angle featuring chamfering adjustment, this solid metal bit is intended for drilling through and pilot holes in steel and other metals. Supplied as a single piece in a blister pack, the drill bit fits both handheld drills and drill presses for general metalworking, maintenance, and repair tasks.
Advantages
The refined HSS construction and ground edges provide consistent cutting performance and improved wear resistance during repetitive metal drilling. The 135° point angle with chamfering adjustment reduces walking and supports quick, accurate starts, which helps maintain hole position without extensive centre punching. The solid one-piece design offers rigidity for straighter holes and reliable tool life in typical workshop and on-site applications.
Suitable for
Drilling pilot and through-holes in steel, iron, and non-ferrous metals
Workshop fabrication and metal assembly
Maintenance, repair and installation tasks requiring a 5.1 mm hole
Use with handheld drills and drill presses
Key specifications
Cutting diameter: 5.1 mm
Overall length: 86 mm
Material: refined high-speed steel (HSS)
Point angle: 135° with chamfering adjustment
Cutting edge: ground
Pack type: single piece in blister packaging
How to use
Mark the hole position and secure the workpiece to prevent movement. Select an appropriate drill speed for the material and apply steady, moderate feed pressure. Start drilling at low speed to establish the hole and then increase speed as the bit engages. Use cutting fluid or lubricant for steels and dense alloys to reduce heat and extend tool life. Withdraw the bit periodically to clear chips when drilling deep holes and allow the bit to cool if it becomes hot.
Usage recommendations
For best results when drilling metal, use cutting fluid, clamp the workpiece securely, and match drill speed to the material hardness. Replace the bit if cutting performance declines or if the tip is visibly worn.

## Specifications

| Feature | Value |
|---|---|
| Length | 86 mm |
| Metal drill bits diameter | 5.1 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 79051K Ø5.1 mm, 86 mm cost, and is it available for purchase?

The price is 3.99 € (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 08.07.2026 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/11720309/67193782_large.webp