# Drill bit set GRAPHITE step cylindrical 4–32 mm (57H740) multiple step holes

**URL:** https://aio.lv/en/product--graphite-57h740--11720880
**Data updated:** 2026-03-08 11:24 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H740
**EAN:** 5902062577405
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h740--11720880

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

GRAPHITE step cylindrical drill bit (MPN 57H740) provides stepped drilling diameters ranging from 4 mm to 32 mm as listed. Designed for creating holes of multiple sizes without changing tools, it is suited for sheet metal, thin plastics and similar materials where stepped hole profiles are required. Features a cylindrical shank and progressive step geometry for sequential cutting and hole enlargement.

## Long description

GRAPHITE step cylindrical drill bit 4–32 mm is a single multi-step tool designed to drill stepped holes with diameters across the range from 4 mm up to 32 mm. The progressive step geometry enables sequential cutting and controlled enlargement of the hole without the need to change tools. The cylindrical shank fits standard drill chucks and is intended for use in sheet metal, thin plastics and similar thin materials where stepped hole profiles or countersinks are required.
Advantages
The stepped design reduces tool changes and speeds up production by allowing several hole diameters to be produced with one tool. Progressive cutting edges provide smoother drilling and staged material removal, decreasing the risk of burrs and improving dimensional control. The cylindrical shank ensures compatibility with common handheld and bench drills and simplifies alignment during drilling operations.
Suitable for
 Making stepped holes in sheet metal
 Working with thin plastic panels and laminates
 Creating holes that require multiple diameter levels or countersinks
 Rapid prototyping and small batch production where tool change minimization is beneficial
Key specifications
 Step diameter range: 4 mm to 32 mm (progressive steps)
 Shank type: cylindrical shank suitable for standard chucks
 Intended materials: sheet metal, thin plastics and similar thin materials
 Geometry: progressive step cutting edges for sequential enlargement
 Typical applications: stepped hole creation and countersinking in thin materials
How to use
Secure the drill bit in the drill chuck ensuring the shank is firmly clamped and the bit is aligned. Select an appropriate drill speed for the material: moderate to high speeds for thin plastics and medium speeds for sheet metal, depending on thickness and alloy. Begin drilling with a light feed to establish the initial step, then increase feed gradually so each successive step cuts smoothly. Use cutting lubricant when drilling metals to extend tool life and reduce heat. Clear chips between passes if necessary to prevent clogging of the stepped geometry.
Usage recommendations
For best results, match drill speed and feed to the material being worked and use cutting fluid on metal. Inspect the workpiece and the drill bit frequently during use, and replace the tool if steps show wear or chipping to maintain hole quality and dimensional accuracy.

## FAQ

### How much does the GRAPHITE step cylindrical drill bit 4–32 mm 57H740 cost, and is it available for purchase?

The price is 38.49 € (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 03.07.2026 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/11720880/67102116_large.webp