# Drill bit Proline 77690 — metal bit Ø 9 mm, length 320 mm, 1 pc

**URL:** https://aio.lv/en/product--proline-77690--11718260
**Data updated:** 2026-03-08 11:19 (EET)
**Category:** Drill Bits
**Manufacturer:** Proline
**Manufacturer code:** 77690
**EAN:** 5903755154750
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--proline-77690--11718260

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Proline 77690 is a single metal drill bit with a 9 mm diameter and 320 mm overall length. Designed for drilling metal, this bit suits handheld drills and drill presses for through-holes and mounting tasks. It provides a straight shank for standard chucks and is intended for use in fabrication, installation and maintenance work.

## Long description

Proline 77690 is a single high-speed steel (HSS) metal drill bit with a 9 mm diameter and an overall length of 320 mm. Engineered for drilling through metal, non-ferrous alloys and plastics, this extra-long, fully ground bit offers straightness and accuracy for through-holes, mounting tasks and workshop applications. The straight shank fits standard chucks on handheld drills and drill presses, making it suitable for fabrication, installation and maintenance work where a long reach is required.
Advantages
The drill features a 135° point angle with chamfering adjustment that facilitates faster centring and reduces wander during start-up, improving drilling speed and precision. Fully ground flutes ensure high rectilinearity and consistent hole quality, while the refined HSS material provides durability and resistance to wear in metalworking tasks. The extra length allows access to deeper or recessed holes without extensions.
Suitable for
 Drilling through steel plates and structural components
 Creating holes in non-ferrous metals such as aluminium and brass
 Drilling in plastics where straightness over depth is needed
 Workshop and on-site installation tasks requiring extended reach
 Use with drill bushes and alignment jigs for accurate positioning
Key specifications
 Diameter: 9 mm
 Overall length: 320 mm
 Material: refined high-speed steel (HSS)
 Point angle: 135° with chamfering adjustment
 Type: extra-long, fully ground twist drill
 Shank: straight shank for standard chucks
 Packaging: single piece per case
How to use
Select an appropriate drill speed and use cutting fluid when drilling into steel or other metals to reduce heat and prolong tool life. Secure the workpiece and, where possible, use a centre punch or pilot mark to prevent walking. Fit the straight shank into a properly tightened chuck on a handheld drill or drill press and apply steady, even pressure; for deeper holes allow the bit to clear chips regularly. For improved accuracy when required, use drill bushes or an alignment jig.
Usage recommendations
For best results, start at a lower RPM to establish the hole, then increase speed as the bit advances. Apply cutting fluid for metalworking, avoid excessive side loads, and clear chips frequently when drilling deep holes to maintain straightness and extend bit life.

## Specifications

| Feature | Value |
|---|---|
| Length | 320 mm |
| Metal drill bits diameter | 9 |
| Number of drill bits | 1 pc(s) |

## FAQ

### How much does the Drill bit Proline 77690 Ø9 mm 320 mm cost, and is it available for purchase?

The price is 23.49 € (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 13.07.2026 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/11718260/67198150_large.webp