Hardened steel chain with 16mm U-lock

Updated 2026-09-05

This comprehensive security set combines a 12mm thick hardened steel chain with a massive 16mm U-lock for dual-layer protection. The four-foot chain length allows for versatile locking positions around large poles or multiple bikes. This combination is specifically engineered to thwart professional thieves using heavy-duty cutting equipment or power tools.

The included U-lock features a disc-style cylinder that is highly resistant to picking and drilling. By using the U-lock as the joining link for the chain, users gain a versatile tool that can also be used independently for quick stops. The hardened steel links are square-shaped to further complicate any attempts at manual bolt cutter attacks.

Ideal for mopeds, scooters, and high-end bicycles, this kit includes four keys to provide convenience for multiple users or backup needs. The rugged construction is built to last, featuring weather-resistant materials that ensure the locking mechanism remains smooth and functional. It represents a top-tier security investment for high-risk urban environments.

View details