# Drill bit GRAPHITE cobalt for metal, cylindrical shank 4.8 mm (57H030)

**URL:** https://aio.lv/en/product--graphite-57h030--11720683
**Data updated:** 2026-03-08 11:23 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H030
**EAN:** 5902062570307
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 4.99 €
**Prices and availability valid until:** 2026-07-09 23:59
**Price without VAT (21%):** 4.12 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h030--11720683

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.06.2026 | free |
| Pickup points | 03.07.2026 | 1.99 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

Cobalt metal drill bit from GRAPHITE with a cylindrical (walcowy) shank and 4.8 mm diameter, designed for drilling in metal materials. The cobalt alloy improves wear resistance and heat tolerance for work in harder steels and long drilling tasks. Suitable for use with handheld drills and drill presses where a cylindrical shank is compatible.

## Long description

GRAPHITE cobalt drill bit for metal with a cylindrical shank and 4.8 mm diameter is engineered for drilling through a range of metallic materials. The cobalt alloy composition increases hardness and heat resistance compared with standard HSS bits, making this drill suitable for prolonged cutting in tougher steels and alloys. The cylindrical shank fits standard chucks on handheld drills and drill presses where a straight shank is required.
Advantages
The cobalt material delivers improved wear resistance and retains cutting edge hardness at higher temperatures, reducing premature dulling during continuous work. The 4.8 mm cutting diameter provides accurate hole sizing for general metalworking tasks. A straight (cylindrical) shank ensures secure clamping in typical three-jaw chucks and drill press chucks. The bit’s geometry supports efficient chip evacuation and stable drilling performance in ferrous metals.
Suitable for
 Drilling holes in mild and hardened steels
 Metal fabrication and repair work
 Use with handheld drills and drill presses with cylindrical-shank compatibility
 Pilot holes and clearance holes for bolts and fasteners
Key specifications
 Material: cobalt-alloy high-speed steel
 Shank type: cylindrical (straight) shank
 Cutting diameter: 4.8 mm
 Intended use: drilling in metal (including harder steels)
 Typical mounting: compatible with standard drill chucks
How to use
Select an appropriate drilling speed for the workpiece material — lower speeds for harder steels and higher speeds for softer metals — and secure the workpiece to prevent movement. Clamp the cylindrical shank firmly in the drill chuck or press arbor. Use cutting fluid or coolant when drilling harder metals to reduce heat and prolong tool life. Apply steady pressure without forcing the bit; allow the cutting edges to remove material and clear chips periodically to avoid clogging.
Usage recommendations
For best results when drilling hardened steels, use moderate feed and reduced spindle speed with appropriate coolant. Inspect the bit for wear before extended jobs and replace when cutting performance degrades to maintain hole quality and operator safety.

## FAQ

### How much does the Drill bit GRAPHITE 57H030 4.8 mm cost, and is it available for purchase?

The price is 4.99 € (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 30.06.2026 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 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/11720683/67101937_large.webp