# Drill bit GRAPHITE cobalt for metal, cylindrical shank, 10.2 mm, model 57H055

**URL:** https://aio.lv/en/product--graphite-57h055--11721491
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H055
**EAN:** 5902062570550
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 11.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h055--11721491

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

Cobalt drill bit by GRAPHITE designed for metalworking, with a 10.2 mm cutting diameter and a cylindrical (walcowe) shank. The tool is intended for drilling steel and other hard metals where cobalt-enhanced cutting edges provide improved wear resistance and heat tolerance. Suitable for handheld drills and drill presses in workshop, maintenance, and industrial applications.

## Long description

The GRAPHITE cobalt drill bit for metal with a 10.2 mm cutting diameter and a cylindrical shank is designed for drilling steel and other hard metals. Made with cobalt-enhanced cutting edges, the tool provides improved wear resistance and higher heat tolerance compared with standard high-speed steel bits. The cylindrical shank fits common handheld drills and drill presses, making the bit suitable for workshop, maintenance and light industrial use.
Advantages
The cobalt alloy cutting tip maintains hardness at elevated temperatures, reducing rapid wear during prolonged drilling in hard materials. The 10.2 mm diameter offers a precise bore size for metalworking tasks that require repeatable hole dimensions. A cylindrical shank ensures stable mounting in standard chucks and allows easy use in both portable and stationary drilling equipment. The bit’s geometry is optimized for chip evacuation and consistent penetration in steel and similar alloys.
Suitable for
Drilling holes in mild and alloy steels
Maintenance and repair tasks in workshops
Production and fabrication where hard-metal drilling is required
Use with handheld drills and drill presses
Key specifications
Cutting diameter: 10.2 mm
Material: cobalt-enhanced high-speed steel
Shank type: cylindrical
Intended materials: steel and other hard metals
Suitable for: handheld drills and drill presses
How to use
Secure the cylindrical shank of the drill bit in the chuck and ensure firm clamping to prevent slipping. Select an appropriate drilling speed and feed rate for the workpiece material; lower speeds are generally recommended for harder steels to avoid overheating. Use cutting fluid or coolant to improve tool life and chip evacuation. Apply steady pressure and allow the bit to cut without excessive force; withdraw periodically to clear chips for deeper holes.
Usage recommendations
For best results, pre-center holes with a pilot drill when necessary, maintain recommended speeds for cobalt bits, and use suitable cutting fluid. Inspect the bit for wear before use and replace when the cutting edge shows significant rounding to maintain hole accuracy and reduce the risk of breakage.

## FAQ

### How much does the GRAPHITE cobalt metal drill bit 10.2 mm 57H055 cost, and is it available for purchase?

The price is 14.49 € (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 09.07.2026 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/11721491/67102709_large.webp