# Drill bit Proline HSS-TiN 4.0 mm, 2 pcs (model 5154354)

**URL:** https://aio.lv/en/product--proline-5154354--10784717
**Data updated:** 2025-12-30 10:13 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 5154354
**EAN:** 5903755154354
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 2.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-5154354--10784717

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

Proline HSS-TiN drill bits, 4.0 mm diameter, set of 2 (MPN 5154354). High-speed steel core with titanium nitride (TiN) coating for increased wear resistance and longer life. Designed for general-purpose drilling in metal and other common materials. Suitable for workshop and professional use where consistent hole size and durability are required.

## Long description

Proline HSS-TiN 4.0 mm drill bits, set of 2 (model 5154354) are designed for drilling in metal and common materials. Each bit has a 4.0 mm diameter, a working length of 43 mm and a total length of 75 mm. The bits are ground with a 135° point angle and have adjustable cutting lips for precise chip removal. A titanium nitride (TiN) coating increases wear resistance and improves hole finish, while the high-speed steel (HSS) core provides strength and toughness for general-purpose workshop and professional use.
Advantages
The TiN coating extends tool life and reduces friction during drilling, resulting in cleaner holes and extended service intervals. The 135° point angle with chip-shedding geometry and adjustable lips enhances centring and reduces walking on metal surfaces. Compact dimensions (4.0 mm diameter, 43 mm working length) make these bits suitable for standard drilling tasks while the HSS construction ensures resistance to heat and mechanical stress.
Suitable for
Drilling holes in metal sheets and structural steel
General workshop and maintenance tasks
Professional jobs requiring consistent hole diameter
Drilling into common materials such as plastics and wood when needed
Key specifications
Brand: Proline
Model / MPN: 5154354
EAN: 5903755154354
Type: HSS drill bit with TiN coating
Diameter: 4.0 mm
Working length: 43 mm
Total length: 75 mm
Point angle: 135°
Quantity: 2 pcs
How to use
Clamp the appropriate drill bit securely in the drill chuck and set the drill to a suitable speed for the material being drilled (lower speeds for hard metals). Use cutting fluid when drilling metal to reduce heat and prolong bit life. Start drilling with steady, even pressure and allow the bit to remove chips; withdraw periodically to clear chips when drilling deep holes. After use, clean off debris and store the bits in a protective case to avoid damage to the TiN coating.
Usage recommendations
For best results on steel and other hard materials, use a lubricant or cutting oil, maintain correct drill speed, and avoid excessive side pressure. Replace bits if the TiN coating is worn through or if the cutting edges become blunt to maintain hole quality and safety.

## FAQ

### How much does the Proline HSS-TiN drill bit 4.0 mm, 2 pcs cost, and is it available for purchase?

The price is 3.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 292 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 22.06.2026 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

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