# Drill bit GRAPHITE spiral hex shank for wood 20 mm (57H258)

**URL:** https://aio.lv/en/product--graphite-57h258--11719670
**Data updated:** 2026-03-08 11:22 (EET)
**Category:** Drill Bits
**Manufacturer:** GRAPHITE
**Manufacturer code:** 57H258
**EAN:** 5902062572585
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--graphite-57h258--11719670

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

Spiral wood drill bit by GRAPHITE with a 20 mm cutting diameter and hexagonal shank, designed for drilling wood and wood-based materials. The spiral flute evacuates chips while the hex shank provides secure grip in chucks and quick-change adapters. Suitable for bench drills, hand drills and woodworking tasks that require straight, large-diameter holes.

## Long description

Spiral wood drill bit by GRAPHITE with a 20 mm cutting diameter and hexagonal shank, designed for drilling wood and wood-based materials. The spiral flute geometry clears chips efficiently while the hex shank ensures a secure fit in chucks and quick-change adapters. Intended for bench drills, hand drills and woodworking tasks that require straight, large-diameter holes, this bit delivers stable cutting and reliable hole quality when used at appropriate speeds and with correct feed pressure.
Advantages
The spiral design promotes continuous chip evacuation, reducing clogging and improving drilling speed in soft and medium-density woods. A 20 mm cutting diameter produces accurate, large holes for dowels, bushings and cable passages. The hexagonal shank minimizes slippage in keyless chucks and quick-change holders, enabling faster tool changes and improved torque transfer. The overall geometry supports straight drilling with reduced wandering when pilot guidance or a center punch is used.
Suitable for
 Drilling holes in solid wood, plywood and particleboard
 Producing dowel or bushing holes in furniture assembly
 Making larger access holes for wiring and pipes in carpentry
 Use in bench drills and cordless or corded hand drills with hex chucks
Key specifications
 Cutting diameter: 20 mm
 Shank type: hexagonal
 Flute type: spiral
 Intended material: wood and wood-based panels
 Recommended tools: bench drill, hand drill, quick-change adapter
How to use
Secure the bit in the drill's chuck or quick-change holder so the hex shank seats fully. Select a moderate rotational speed appropriate for a 20 mm wood bit and the density of the material; higher speeds suit softwoods while medium speeds are better for hardwoods and composite boards. Apply steady, even feed pressure without forcing the bit to avoid overheating and splintering. Withdraw the bit periodically on deep holes to clear chips and maintain cutting efficiency. When precision is required, use a center punch or drilling guide to prevent wandering.
Usage recommendations
Use personal protective equipment such as eye protection and a dust mask when drilling. For cleaner entry and exit holes in finished workpieces, consider backing the board with scrap material and clamping the workpiece securely. Clean and inspect the flutes after use to maintain cutting performance.

## FAQ

### How much does the GRAPHITE wood spiral drill bit 20 mm cost, and is it available for purchase?

The price is 25.49 € (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 06.07.2026 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/11719670/67100967_large.webp