# Drill bit Proline 78052K, metal, Ø 5.2 mm, length 86 mm, 1 pc

**URL:** https://aio.lv/en/product--proline-78052k--11721331
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78052K
**EAN:** 5903755154002
**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-78052k--11721331

## 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 78052K is a single metal drill bit with a 5.2 mm diameter and 86 mm overall length. Designed for drilling metal, this solid drill bit suits repair, fabrication and installation tasks requiring precise 5.2 mm holes. Supplied as one piece, it fits standard drill chucks for use in hand drills and drill presses.

## Long description

Proline 78052K is a single HSS-Co metal drill bit with a 5.2 mm diameter and an overall length of 86 mm. Designed specifically for drilling metal, this solid, fully ground drill bit is suitable for hand drills and drill presses and delivers precise, straight holes with minimal runout. The 135° point angle with chamfering adjustment enables fast initial penetration and reduced walking at the start of the hole, while cobalt alloy construction provides increased hardness and temperature resistance for demanding materials.
Advantages
The drill bit is made from high-class high-speed steel with 5% cobalt, offering enhanced wear resistance and stability at elevated temperatures. Full grinding manufacturing ensures consistent diameter accuracy and rectilinear hole quality. The 135° point geometry with chamfering reduces the need for re-marking and speeds up drilling operations. Supplied as a single piece in a blister pack, it fits standard chucks and is ready for immediate use.
Suitable for
Drilling through high-alloy and stainless steels
Working with titanium and acid-resistant steels
Creating precise 5.2 mm holes in cast iron and creep-resisting steels
Repair, fabrication and installation tasks requiring accurate metal holes
Key specifications
Material: high-speed steel with 5% cobalt (HSS-Co)
Diameter: 5.2 mm
Overall length: 86 mm
Point angle: 135° with chamfering adjustment
Manufacturing: fully ground flutes for high accuracy
Temperature resistance: high, suitable for elevated cutting temperatures
How to use
Secure the drill bit in a properly tightened chuck and set the drill or drill press to an appropriate speed for 5.2 mm HSS-Co bits and the specific workpiece material. Use cutting fluid or coolant when drilling high-alloy, stainless or heat-sensitive materials to prolong tool life and reduce heat buildup. Apply steady, moderate feed pressure and allow the bit to cut without excessive force to maintain hole accuracy and prevent premature wear.
Usage recommendations
For best results, select drill speeds and coolant appropriate to the material: lower speeds and continuous coolant for stainless and high-alloy steels, moderate speeds for cast iron. Inspect the cutting edges before use and replace the bit if wear or chipping is visible. Store in original blister packaging to protect the ground cutting surfaces when not in use.

## Specifications

| Feature | Value |
|---|---|
| Length | 86 mm |
| Metal drill bits diameter | 5.2 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 78052K Ø5.2 mm, 86 mm 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/11721331/67191785_large.webp