# Drill bit set Proline 78048K — metal bits Ø4.8 mm, length 86 mm, 2 pcs

**URL:** https://aio.lv/en/product--proline-78048k--11719037
**Data updated:** 2026-03-08 11:21 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78048K
**EAN:** 5903755153944
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78048k--11719037

## 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 78048K is a set of two metal drill bits with a diameter of 4.8 mm and a working length of 86 mm. Designed for drilling metal and similar materials, the set includes two identical straight shank bits suitable for hand drills and drill presses. Use for metal fabrication, repair, and installation tasks requiring accurate 4.8 mm holes.

## Long description

Proline 78048K is a set of two metal drill bits with a 4.8 mm diameter and an 86 mm working length. Manufactured from high-speed steel with 5% cobalt (HSS-Co), these straight shank bits are intended for drilling demanding metals, including high-alloy steels, stainless and acid-resistant steels, titanium, and cast iron. The bits are fully ground for precise geometry and straightness, and feature a 135° point angle with chamfering adjustment to enable fast, accurate starts and reduced need for repositioning during marking.
Advantages
The HSS-Co material ensures elevated heat resistance and prolonged cutting life when working at higher temperatures. Full grinding production guarantees high dimensional accuracy and rectilinearity of holes. The 135° point angle with chamfering adjustment improves centering and reduces walking on the work surface, allowing quicker penetration and consistent hole quality. Supplied in a compact blister pack, the set provides two identical bits suitable for both hand drills and drill presses.
Suitable for
Drilling through high-alloy and stainless steels
Creating precise 4.8 mm holes in metal fabrication and repair
Use in maintenance, installation, and assembly tasks
Drilling tougher materials such as titanium and cast iron
Key specifications
Diameter: 4.8 mm
Working length: 86 mm
Shank type: straight shank
Material: high-speed steel with 5% cobalt (HSS-Co)
Point angle: 135° with chamfering adjustment
Manufacturing: fully ground flutes for high accuracy
Pack content: 2 identical pieces
How to use
Secure the drill bit in the chuck of a hand drill or drill press, ensuring concentric clamping to avoid runout. Mark the drilling position and, if necessary, use a center punch to prevent the bit from wandering. Start drilling at moderate speed and apply steady, even pressure; for harder materials and to extend tool life, use lower speeds and periodic pecking to clear chips and reduce heat buildup. Use appropriate cutting fluid for stainless and heat-resistant steels to improve performance and tool life.
Usage recommendations
For best results when drilling high-alloy or stainless steels, use cutting lubricant, maintain lower spindle speeds, and withdraw the bit periodically to clear chips. When drilling thin sheets, consider backing the workpiece to prevent burrs or deformation. Store the bits in their blister pack to protect the ground cutting edges.

## Specifications

| Feature | Value |
|---|---|
| Length | 86 mm |
| Metal drill bits diameter | 4.8 |
| Number of drill bits | 2 pc(s) |

## FAQ

### How much does the Proline 78048K drill bits Ø4.8 mm, 86 mm, 2 pcs cost, and is it available for purchase?

The price is 6.99 € (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/11719037/67196513_large.webp