# Bosch HSS Step Drill Bit 4-12 mm with 3-Flatted Shank

**URL:** https://aio.lv/en/product--bosch-2608587425--12424565
**Data updated:** 2026-05-13 16:27 (EEST)
**Category:** Home Goods Accessories
**Manufacturer:** Bosch
**Manufacturer code:** 2608587425
**EAN:** 3165140630191
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 52.99 €
**Prices and availability valid until:** 2026-08-12 23:59
**Price without VAT (21%):** 43.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--bosch-2608587425--12424565

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.89 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The Bosch HSS step drill bit, size 4-12 mm, is designed for precise drilling in thin materials. Featuring a durable high-speed steel construction and a 3-flatted shank for secure chuck grip, this tool ensures clean, burr-free holes. Ideal for metalworking and professional applications, it allows for multiple hole diameters with a single bit, increasing efficiency in various drilling tasks.

## Long description

The Bosch HSS step drill bit, sized 4-12 mm, is a high-performance tool engineered for drilling precise, clean holes in thin materials. Constructed from durable high-speed steel, this bit is designed to withstand the rigors of frequent use while maintaining its cutting edge. The inclusion of a 3-flatted shank ensures a secure grip in standard drill chucks, preventing slippage during operation and providing stability for accurate results.
Advantages
This step drill bit offers significant versatility by allowing the user to drill multiple hole diameters with a single tool, eliminating the need for constant bit changes. The specialized geometry of the bit ensures that holes are drilled cleanly and are free of burrs, which reduces the need for secondary finishing work. Its robust construction provides excellent heat resistance and longevity, making it a reliable choice for both professional tradespeople and home improvement enthusiasts who require consistent performance in metalworking tasks.
Suitable for
Drilling holes in thin metal sheets
Creating holes in plastic and thin-walled pipes
Electrical installation work
General maintenance and repair tasks
When it may not be suitable
This tool is not intended for drilling through thick materials or hardened steel, as the step design is optimized for thin-gauge surfaces. It is also not suitable for use with impact drivers or hammer drills, which may damage the bit geometry.
Key specifications
Diameter range: 4-12 mm
Material: High-speed steel (HSS)
Shank type: 3-flatted shank
Total length: 66.5 mm
Number of steps: 9
How to use
To use the Bosch HSS step drill bit, insert the 3-flatted shank securely into the chuck of your drill and tighten firmly. Ensure the workpiece is properly clamped to prevent movement. Begin drilling at a low speed, applying steady, moderate pressure to allow the cutting edges to engage with the material. As you progress through the steps, the bit will naturally enlarge the hole to the desired diameter. It is recommended to use a suitable cutting oil to reduce friction and heat, which will extend the life of the bit and improve the quality of the finish.
What to consider before purchase
Verify that your drill chuck is compatible with a 3-flatted shank.
Ensure the material thickness does not exceed the step height of the bit.
Check that the required hole sizes fall within the 4-12 mm range.
Usage recommendations
For optimal results and to prevent overheating, always maintain a low drilling speed and use a cooling lubricant when working with metals.

## FAQ

### How much does the Bosch HSS Step Drill Bit 4-12 mm cost, and is it available for purchase?

The price is 52.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 10.08.2026 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. 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 Bosch 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 Bosch 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/12424565/68720965_large.webp