# Drill bit Proline 91640 — metal 16 mm diameter, length 400 mm, 1 pc

**URL:** https://aio.lv/en/product--proline-91640--11720518
**Data updated:** 2026-03-08 11:23 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 91640
**EAN:** 5903755916402
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 9.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-91640--11720518

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Single Proline 91640 metal drill bit with 16 mm diameter and 400 mm overall length. Designed for drilling metal, this solid drill bit comes as one piece and is suitable for deep or through holes in steel and other ferrous materials. Use with compatible drill chucks or holders for metalworking, maintenance, and construction tasks.

## Long description

Single Proline 91640 metal drill bit with a 16 mm diameter and 400 mm overall length, supplied as one piece. Designed primarily for drilling metal, this solid bit is intended for deep or through holes in steel and other ferrous materials. It fits standard drill chucks or holders appropriate for its shank and is suitable for professional metalworking, maintenance, and construction tasks.
Advantages
The solid construction and hardened cutting geometry provide consistent performance when drilling ferrous metals. A design focused on centered drilling reduces wandering and enhances hole accuracy. The length of the bit allows drilling of deep or through holes without changing extensions, and compatibility with typical chucks ensures straightforward installation and removal.
Suitable for
 Drilling deep or through holes in steel and other ferrous materials
 General metalworking and fabrication tasks
 Maintenance and repair operations requiring precise hole placement
 Construction jobs where metal components need joining or passage holes
Key specifications
 Diameter: 16 mm
 Overall length: 400 mm
 Quantity: 1 piece
 Material application: metal / ferrous materials
 Design: solid one-piece drill bit for deep drilling
How to use
Select a drill or holder compatible with the bit's shank and secure the bit firmly in the chuck. Mark the drilling point and, if needed, use a center punch to prevent walking on sheet or plate surfaces. Start drilling at a low speed to establish the cut, then increase speed and apply steady axial pressure appropriate for the material being drilled. Use cutting fluid or coolant when working with steel to reduce heat and extend tool life. After completing the hole, retract the bit while the spindle is rotating slowly to help clear swarf.
Usage recommendations
For best results when drilling steel and other ferrous metals, use appropriate cutting fluid, maintain stable clamping of the workpiece, and match drill speed to material thickness and hardness. Inspect the bit for wear before each use and replace if cutting performance degrades or if the tip is damaged.

## Specifications

| Feature | Value |
|---|---|
| Length | 400 mm |
| Metal drill bits diameter | 16 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 91640 — 16 mm, 400 mm cost, and is it available for purchase?

The price is 11.49 € (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 07.07.2026 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/11720518/67193613_large.webp