# MASTERLOCK 8391EURDPRO Hardened Steel Chain Lock, 90cm Length, 8mm Diameter, Keyed

**URL:** https://aio.lv/en/product--masterlock-8391eurdpro--4948468
**Data updated:** 2026-05-27 17:53 (EEST)
**Category:** Bicycle accessories
**Manufacturer:** MASTERLOCK
**Manufacturer code:** 8391EURDPRO
**EAN:** 3520190929419
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.99 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 24.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--masterlock-8391eurdpro--4948468

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The MASTERLOCK 8391EURDPRO is a durable security chain featuring a 90cm length and 8mm diameter hardened steel links. Designed for reliable protection, this chain comes with an integrated keyed lock mechanism. It is an ideal solution for securing bicycles, motorcycles, or outdoor equipment, providing robust resistance against cutting and sawing attempts in various environments.

## Long description

The MASTERLOCK 8391EURDPRO is a robust security solution designed to provide reliable protection for your valuable assets. This chain lock features a 90cm length and 8mm diameter links constructed from hardened steel, ensuring high resistance against physical attacks. The integrated keyed locking mechanism offers a convenient and secure way to lock your items without the need for a separate padlock, making it a practical choice for daily security needs.
Advantages
The hardened steel construction of the chain provides significant resistance against cutting, sawing, and prying attempts, which is essential for deterring theft. To protect the surfaces of your equipment, the chain is encased in a durable nylon cover that prevents scratches and abrasions during use. Furthermore, the integrated anti-pick disc key cylinder enhances the overall security level, ensuring that the locking mechanism remains difficult to manipulate by unauthorized parties.
Suitable for
Securing bicycles in urban environments
Locking motorcycles or scooters
Protecting outdoor equipment such as lawnmowers or garden tools
Securing gates or storage units
When it may not be suitable
This chain lock may not be suitable for securing high-value assets in high-risk areas where a higher security rating or a thicker chain diameter is recommended. Additionally, the 90cm length might be insufficient for securing items to larger fixed objects like thick poles or trees.
Key specifications
Chain length: 90cm
Link diameter: 8mm
Material: Hardened steel
Locking mechanism: Integrated disc key cylinder
Protective sleeve: Nylon
How to use
To use the MASTERLOCK 8391EURDPRO, wrap the chain around the frame of your bicycle or the part of the equipment you wish to secure and around a sturdy, fixed anchor point. Insert the provided key into the integrated cylinder and turn it to lock the mechanism securely. Ensure the chain is pulled taut to minimize the space available for potential tools to be inserted. Always keep the key in a safe place and avoid leaving it inside the lock when not in use.
What to consider before purchase
Verify that the 90cm length is sufficient for your specific locking requirements
Ensure the 8mm link diameter meets the security standards for your intended application
Check if the locking mechanism is compatible with your storage habits
Usage recommendations: Regularly clean the lock cylinder and apply a light lubricant to ensure smooth operation. Avoid dropping the lock on hard surfaces to prevent damage to the internal mechanism.

## FAQ

### How much does the MASTERLOCK 8391EURDPRO Hardened Steel Chain Lock cost, and is it available for purchase?

The price is 29.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 08.07.2026 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. 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 MASTERLOCK 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 MASTERLOCK 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/4948468/30812424_large.webp