# Cobalt Metal Drill Bit Set GRAPHITE model 57H088 — assorted diameters 1.5–6.5 mm

**URL:** https://aio.lv/en/product--graphite-57h088--11718584
**Data updated:** 2026-03-08 11:20 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H088
**EAN:** 5902062570888
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h088--11718584

## 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 | 1.89 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

Cobalt metal drill bit set GRAPHITE 57H088 containing a range of straight-shank cylindrical bits with diameters from 1.5 mm to 6.5 mm (including 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6, 6.5 mm). Designed for drilling steel and other ferrous materials, these cobalt alloy bits offer higher heat and wear resistance than standard HSS, suitable for workshop, maintenance and metal fabrication tasks requiring precise through and pilot holes.

## Long description

Cobalt metal drill bit set GRAPHITE model 57H088 — assorted diameters 1.5–6.5 mm is a selection of straight-shank cylindrical drill bits made from high-cobalt alloy intended for drilling steel and other ferrous materials. The set contains bits in the following diameters: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6 and 6.5 mm. These cobalt alloy bits provide greater heat resistance and improved wear performance compared with standard high-speed steel (HSS), enabling reliable cutting and consistent hole quality in demanding metalworking conditions.
Advantages
The cobalt composition increases red hardness and prolongs tool life when drilling hardened or high-temperature-prone materials. Straight-shank cylindrical design ensures compatibility with common drill chucks and supports stable centering and straight drilling. The assortment of metric diameters covers both pilot-hole and through-hole requirements, reducing the need to change tools frequently during repair, fabrication or maintenance tasks.
Suitable for
 Drilling steel and other ferrous metals
 Workshop, maintenance and fabrication tasks
 Creating pilot holes and through holes of specified diameters
 Repair work on machinery and metal structures
Key specifications
 Material: high-cobalt alloy (cobalt-enhanced drill steel)
 Shank type: straight cylindrical shank
 Diameter range: 1.5–6.5 mm (12 sizes: 1.5, 2, 2.5, 3, 3.2, 3.5, 4, 4.5, 4.8, 5, 5.5, 6, 6.5 mm)
 Intended workpiece: steel and other ferrous materials
 Typical applications: through holes, pilot holes, general metal drilling
How to use
Select the drill bit diameter required for the hole, mount the straight shank securely in a suitable chuck, and clamp the workpiece to prevent movement. Use appropriate cutting speeds and feed rates for the workpiece material—lower speeds for harder steels—and apply cutting fluid or coolant when drilling to reduce heat and extend bit life. Withdraw the bit periodically to clear chips when drilling deep holes, and avoid excessive side load to maintain hole accuracy.
Usage recommendations
For best results when drilling hardened or thick steel, use a drill press where possible, maintain steady coolant flow, and start with a smaller pilot hole before enlarging to final diameter. Inspect drill tips for wear and regrind only if the correct geometry can be restored; otherwise replace to preserve hole quality.

## FAQ

### How much does the GRAPHITE cobalt metal drill bit set 57H088 cost, and is it available for purchase?

The price is 15.99 € (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 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 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/11718584/67099932_large.webp