MASTERLOCK 8390EURDPRO Chain Lock with 90cm Hardened Steel Chain and 40mm Laminated Steel Padlock

The MASTERLOCK 8390EURDPRO is a robust chain lock designed to provide reliable security for your valuable items. It features a 90cm long chain constructed from 6mm thick hardened steel, paired with a durable 40mm laminated steel padlock. This combination is engineered to withstand physical attacks, making it an effective deterrent against theft for various outdoor applications.

Advantages

The primary strength of this lock lies in its hardened steel construction, which offers significant resistance to cutting, sawing, and prying attempts. The chain is encased in a protective nylon sleeve that prevents scratches and damage to the surfaces of your bicycle or equipment. Additionally, the included padlock features a laminated steel body with a weather-resistant cover, ensuring reliable operation even in challenging outdoor conditions. The 4-pin cylinder mechanism and dual locking levers further enhance security by protecting against picking and hammering.

Suitable for

• Securing bicycles and scooters
• Locking gates and garden fences
• Protecting outdoor equipment and tools
• General residential security needs

When it may not be suitable

This chain lock is intended for standard security applications and may not be sufficient for high-risk areas where professional-grade power tools could be used. Due to its 90cm length, it may be too short for securing multiple items or locking a bicycle to large-diameter objects.

Key specifications

• Chain length: 900 mm
• Chain link diameter: 6 mm
• Padlock width: 40 mm
• Shackle diameter: 9 mm
• Material: Hardened steel chain and laminated steel padlock
• Protective features: Nylon chain sleeve and thermoplastic padlock cover

How to use

To use the lock, wrap the chain around the object you wish to secure and the fixed anchor point. Ensure the chain is pulled taut to minimize slack, which makes it harder for tools to gain leverage. Insert the padlock shackle through the end links of the chain and snap the lock shut. Ensure the keyway cover is closed after locking to protect the internal mechanism from dirt and moisture.

What to consider before purchase

• Verify that the 90cm length is sufficient for your specific locking requirements.
• Assess the security level needed for your environment.
• Check if the 6mm chain thickness meets your insurance requirements for bicycle security.

Usage recommendations

Regularly lubricate the padlock cylinder to ensure smooth operation and keep the keyway cover closed to prevent debris accumulation. Avoid dropping the lock on hard surfaces to maintain the integrity of the protective thermoplastic coating.