# Wera 857/1 Z Spanner Bit, 4 mm, 25 mm Length

**URL:** https://aio.lv/en/product--wera-05057150001--12444797
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Wrenches & Adjustable Wrenches
**Manufacturer:** Wera
**Manufacturer code:** 05057150001
**EAN:** 4013288038609
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.99 €
**Prices and availability valid until:** 2026-08-20 23:59
**Price without VAT (21%):** 8.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wera-05057150001--12444797

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 05.08.2026 | free |
| Pickup points | 10.08.2026 | 1.79 EUR |
| Courier delivery to door | 10.08.2026 | 4.99 EUR |

## Summary description

The Wera 857/1 Z is a high-quality spanner bit designed for use with screws featuring two holes. With a 4 mm tip size and a 25 mm length, this durable bit is engineered for industrial and professional applications. It provides a secure fit and reliable torque transmission, making it an essential tool for specialized fastening tasks. Compatible with standard bit holders, it ensures efficient performance in various mechanical and assembly environments.

## Long description

The Wera 857/1 Z Spanner Bit is a precision-engineered tool designed specifically for driving screws with two holes, often referred to as snake-eye or spanner screws. Measuring 4 mm in width and 25 mm in length, this bit is manufactured to meet the rigorous demands of professional and industrial environments. Its robust construction ensures longevity and consistent performance, providing a secure engagement with the fastener to prevent slipping or damage during operation.
Advantages
This spanner bit features high-quality material composition that resists wear and deformation even under heavy use. The design allows for optimal torque transmission, ensuring that fasteners are tightened or loosened efficiently. Its compact 25 mm length makes it highly versatile for use in confined spaces where standard screwdrivers cannot reach, and it is fully compatible with standard bit holders, allowing for quick and easy integration into existing tool kits.
Suitable for
Fastening and loosening spanner screws with two holes
Security installations and tamper-resistant hardware
Mechanical assembly and maintenance tasks
Professional industrial applications
When it may not be suitable
This bit is not intended for use with standard slotted, Phillips, or Torx screws, as the tip geometry is specifically shaped for two-hole fasteners. It should not be used with high-impact power tools that exceed the torque capacity of the bit, as this may lead to premature wear or breakage.
Key specifications
Tip size: 4 mm
Length: 25 mm
Drive type: Spanner (two-hole)
Compatibility: Standard 1/4 inch bit holders
How to use
To use the Wera 857/1 Z Spanner Bit, insert the hex shank into a compatible 1/4 inch bit holder or screwdriver handle. Align the two prongs of the bit with the corresponding holes on the screw head. Apply steady, firm pressure to ensure the bit remains seated in the holes while turning. Maintain a perpendicular angle to the screw head to prevent the bit from camming out or damaging the fastener surface.
What to consider before purchase
Verify the distance between the holes on your specific screws to ensure the 4 mm size is correct.
Ensure you have a compatible 1/4 inch bit holder available.
Check the depth of the screw holes to confirm the 25 mm length is sufficient for your application.
Usage recommendations
Always wear appropriate eye protection when working with mechanical fasteners. Regularly inspect the bit for signs of wear or damage to ensure continued safety and performance. Store the bit in a dry environment to prevent corrosion.

## FAQ

### How much does the Wera 857/1 Z Spanner Bit 4 mm cost, and is it available for purchase?

The price is 9.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 05.08.2026 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, 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 Wera 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 Wera 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