# Drill bit Proline 11 mm x 142 mm model 78110K, 1 pc

**URL:** https://aio.lv/en/product--proline-78110k--11721327
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78110K
**EAN:** 5903755154149
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 13.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 11.15 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78110k--11721327

## 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

Single metal drill bit Proline 78110K with 11 mm diameter and 142 mm overall length. Designed for drilling metal and similar materials, this straight shank bit suits hand drills and drill presses. Provides a single replacement or spare for workshop, construction, maintenance and installation tasks where a specific 11 mm hole is required.

## Long description

Single metal drill bit Proline 78110K with an 11 mm diameter and 142 mm overall length, intended for drilling metal and similar materials. The straight round shank is compatible with hand drills and drill presses, providing a single replacement or spare for workshop, construction, maintenance and installation tasks that require an 11 mm hole. The bit is manufactured from high-speed steel with 5% cobalt and produced entirely by grinding to ensure accurate, straight holes.
Advantages
The drill bit features a 135° point angle with chamfering adjustment for fast centring and reduced walking when starting holes. Construction from highest-class HSS with 5% cobalt gives increased hardness and high resistance to elevated temperatures, improving wear resistance during demanding drilling operations. Fully ground flutes and cutting geometry deliver high dimensional accuracy and rectilinearity of holes in demanding materials.
Suitable for
Drilling holes in high-alloy steels and stainless steels
Working with titanium and acid-resistant metals
Drilling in cast iron and creep-resisting steels
Use in hand drills and drill presses for metal fabrication and maintenance
Replacement or spare bit for construction and installation jobs requiring an 11 mm hole
Key specifications
Diameter: 11 mm
Overall length: 142 mm
Point angle: 135° with chamfering adjustment
Material: high-speed steel (HSS) with 5% cobalt
Manufacturing method: fully ground
Suitable materials: high-alloy steels, stainless steels, titanium, acid-resistant metals, cast iron
How to use
Secure the drill bit in the chuck of a hand drill or drill press, ensuring the straight shank is fitted concentrically and tightened. Mark the drilling point and, if required, create a pilot dimple or centre punch to improve accuracy. Use appropriate cutting speed and steady feed force for metal drilling; increase coolant or cutting fluid flow when working with high-alloy or temperature-sensitive materials. Clear chips regularly to avoid clogging and overheating. After use, inspect the cutting edges for wear and store the bit in its blister pack to protect the ground flutes.
Usage recommendations
The recommended practice is to use cutting fluid and moderate speeds when drilling high-alloy or stainless steels to extend tool life. For accurate starts, use a centre punch or pilot drill and avoid excessive feed that can cause premature wear or breakage.

## Specifications

| Feature | Value |
|---|---|
| Length | 142 mm |
| Metal drill bits diameter | 11 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Proline drill bit 11 mm x 142 mm 78110K cost, and is it available for purchase?

The price is 13.49 € (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/11721327/67191789_large.webp