# Drill bit Proline 78140 — 14 mm diameter, 160 mm length, metal

**URL:** https://aio.lv/en/product--proline-78140--11721037
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 78140
**EAN:** 5903755781406
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 15.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-78140--11721037

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Single metal drill bit Proline 78140 with 14 mm cutting diameter and 160 mm overall length. Designed for drilling metal, this high-precision bit suits hand drills and drill presses for through-holes and clearance holes in steel and other ferrous materials. Delivered as one piece for repair, maintenance and metalworking tasks.

## Long description

The Proline 78140 drill bit is a single 14 mm diameter, 160 mm overall length metalworking bit designed for precise drilling in steel and other ferrous materials. Machined entirely by grinding from high-speed steel with 5% cobalt (HSS-Co), this bit features a 135° point angle with chamfering adjustment, offering rapid penetration and accurate centring for through-holes and clearance holes. Its heat-resistant composition and ground geometry maintain cutting performance during demanding metalworking, repair and maintenance operations.
Advantages
This drill bit combines HSS-Co material with full grinding production to provide high dimensional accuracy and straightness of holes. The 135° point reduces walking and improves guidance when starting holes, while the chamfering adjustment shortens setup time and improves surface finish. Enhanced heat resistance and cobalt alloying increase durability when drilling high-alloy, stainless, acid-resistant, creep-resisting steels, titanium and cast iron. Supplied as a single piece, the bit is suitable for both hand drills and drill presses.
Suitable for
Drilling through-holes and clearance holes in structural and stainless steels
Metal repair, maintenance and fabrication tasks
Work with high-alloy, corrosion-resistant and creep-resisting materials
Use in hand-held drills and drill presses for accurate holemaking
Key specifications
Cutting diameter: 14 mm
Overall length: 160 mm
Point angle: 135° with chamfering adjustment
Material: high-speed steel with 5% cobalt (HSS-Co)
Manufacturing: fully ground flute geometry for high accuracy
Suitable materials: high-alloy steels, stainless and acid-resistant steels, titanium, cast iron and other hard-to-machine ferrous materials
How to use
Mark the hole location and secure the workpiece to prevent movement. Use a centre punch if required to aid starting. Select appropriate cutting speed and feed for HSS-Co drills and the specific workpiece material; lower speeds are recommended for hard or heat-sensitive alloys. Apply steady, moderate pressure and allow the drill to cut—avoid excessive force that can overheat the bit. Use cutting fluid or coolant when drilling stainless, high-alloy steels or titanium to extend bit life and improve chip evacuation. Clear chips frequently and retract the drill periodically for cooling when performing long-hole drilling.
Usage recommendations
For best results, use the Proline 14 mm HSS-Co drill bit in a properly aligned chuck, maintain recommended RPMs for the material being drilled, and employ cutting fluid when working with stainless or heat-resistant alloys. Store the bit in its protective plastic tube to prevent damage to the cutting edges.

## Specifications

| Feature | Value |
|---|---|
| Length | 160 mm |
| Metal drill bits diameter | 14 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 78140 14 mm 160 mm cost, and is it available for purchase?

The price is 18.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 100 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 09.07.2026 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/11721037/67192480_large.webp