# Drill Bit Set GRAPHITE cobalt for metal, cylindrical shank 4.5 mm, 10 pcs

**URL:** https://aio.lv/en/product--graphite-57h028-10--11719325
**Data updated:** 2026-03-08 11:21 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H028-10
**EAN:** 5902062222015
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h028-10--11719325

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.07.2026 | free |
| Pickup points | 15.07.2026 | 1.99 EUR |
| Courier delivery to door | 15.07.2026 | 4.99 EUR |

## Summary description

Cobalt drill bit set by GRAPHITE for drilling metal, featuring 10 pieces with 4.5 mm diameter and cylindrical shanks. Made for use with hand drills and drill presses, these high-speed steel bits with cobalt content offer increased wear resistance and heat tolerance when cutting steels and other hard metals. Suitable for industrial and workshop tasks requiring durable metal-drilling performance.

## Long description

GRAPHITE cobalt drill bit set for metal, cylindrical shank 4.5 mm, 10 pcs is designed for drilling holes in steel and other hard metals. The set contains ten 4.5 mm diameter bits made from high-speed steel with cobalt alloy, providing higher heat resistance and extended service life compared with standard HSS bits. Cylindrical shanks make these bits compatible with standard chucks of hand drills and drill presses, allowing straightforward installation and stable rotation during metalworking tasks.
Advantages
The cobalt alloy composition increases hardness and maintains cutting performance at higher temperatures, reducing edge wear during prolonged or heavy-duty drilling. The 4.5 mm diameter is suitable for common fastening and fabrication tasks, and the cylindrical shank ensures reliable clamping in a wide range of drilling tools. Ten identical bits in one set provide quick replacement on the job and reduce downtime in production or workshop environments.
Suitable for
 Drilling mild and alloyed steels
 Workshop and industrial metal fabrication
 Hand drill and drill press operations
 Maintenance and repair tasks requiring repeated hole-making
Key specifications
 Material: high-speed steel with cobalt alloy
 Diameter: 4.5 mm
 Shank type: cylindrical
 Quantity in set: 10 pieces
 Intended use: drilling metals including steels and other hard alloys
How to use
Select an appropriate drill speed for the metal type and secure the workpiece. Clamp the 4.5 mm cylindrical shank firmly in the drill chuck or press arbor. Use cutting fluid or coolant when drilling hard steels to reduce heat and extend bit life. Apply steady pressure and allow the bit to cut; withdraw periodically to clear chips and avoid overheating. Replace bits from the set as edges dull to maintain consistent hole quality.
Usage recommendations
 For best results, pre-drill pilot holes when drilling very hard or thick materials, use a lubricant suitable for metalworking, and match drill speed to the metal grade: lower speeds for stainless and hard alloys, higher speeds for softer steels. Store the set in a dry place to prevent corrosion and inspect bits for wear before use.

## FAQ

### How much does the GRAPHITE cobalt drill bits 4.5 mm, 10 pcs cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 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 10.07.2026 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 GRAPHITE 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 GRAPHITE 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/11719325/67100628_large.webp