# Step twist drill bit set AWTools 1077330 M2‑TiAlN, set of 4, sizes 4–12 mm and 4–20 mm

**URL:** https://aio.lv/en/product--awtools-1077330--11384882
**Data updated:** 2026-03-07 20:01 (EET)
**Category:** Drill Bits
**Manufacturer:** AWTools
**Manufacturer code:** 1077330
**EAN:** 5903678626099
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 63.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 52.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--awtools-1077330--11384882

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Set of four step twist drill bits AWTools 1077330 with M2 substrate and TiAlN coating. Includes two stepped sizes covering 4–12 mm and 4–20 mm ranges. Designed for progressive hole enlargement in metal, sheet, and other materials where stepped drilling speeds up deburring and hole sizing. Suitable for workshop and industrial drilling tasks using hand-held or machine drills.

## Long description

Set of four step twist drill bits AWTools 1077330 with M2 substrate and TiAlN coating is intended for progressive hole enlargement and fast deburring in metalworking and general fabrication. The set contains two stepped drill types that cover diameter ranges 4–12 mm and 4–20 mm, enabling a sequence of hole sizes with a single tool. These step drills are suitable for use in hand-held drills and drill presses and are optimized for cutting in steel, stainless steel, non-ferrous metals and coated sheets where a hard, wear-resistant coating and stable substrate extend tool life.
Advantages
The M2 high-speed steel core provides toughness and heat resistance while the TiAlN (titanium aluminum nitride) coating increases surface hardness and reduces friction, improving wear resistance and allowing higher cutting temperatures. The stepped geometry lets you enlarge holes without changing tools, reducing setup time and improving consistency of hole diameters. The set of four covers common workshop ranges, giving flexibility for different hole sizes and applications. Suitable for both manual and machine use, these bits maintain cutting performance when drilling through thin sheets and thicker plate within the specified ranges.
Suitable for
Progressive hole enlargement in steel and stainless steel
Drilling and deburring in sheet metal and aluminium
Workshop and industrial drilling with hand-held and machine drills
Creating stepped holes for fast sizing and chamfering
Key specifications
Material substrate: M2 high-speed steel
Surface coating: TiAlN (titanium aluminum nitride)
Set composition: four step twist drill bits covering step ranges 4–12 mm and 4–20 mm
Intended use: progressive drilling and deburring in metals and sheets
Compatibility: suitable for use in hand-held drills and drill presses
How to use
Select the appropriate stepped bit for the target diameter range and secure it in the drill chuck. Use steady feed and moderate cutting speeds suitable for the workpiece material; higher speeds are possible due to the TiAlN coating but should be balanced with sufficient coolant or intermittent pecking on tougher materials. Clamp or support the workpiece to prevent movement, and start drilling at a controlled rate to establish the initial pilot portion before progressing through the larger steps. Retract periodically to clear chips and, when drilling stainless steel or thicker material, use cutting fluid to reduce heat buildup.
Usage recommendations
For best results, match drill speed and feed to the material: lower speeds and higher lubrication for stainless steel, moderate speeds for mild steel and higher speeds for non-ferrous metals. Inspect cutting edges before use and replace bits when wear or chipping affects hole quality. When working with thin sheets, support the material to avoid deformation and use the stepped design to combine drilling and chamfering in one operation.

## FAQ

### How much does the Step twist drill bit set AWTools 1077330 M2‑TiAlN cost, and is it available for purchase?

The price is 63.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 180 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 07.07.2026 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 AWTools 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 AWTools 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

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