GERDA CONTRA LINE 1200/6V Bicycle Chain Lock 120cm 6mm Hardened Steel Black

Product Overview

The GERDA CONTRA LINE 1200/6V bicycle chain lock is designed for standard protection of bicycles in urban and commercial settings. Made with 6 mm hardened steel round links and encased in a durable textile sleeve, it offers 120 cm of length to easily secure bikes to stationary structures. The lock features a specialized dust cap to protect the keyhole from contaminants such as dust, sand, and mud, supporting reliable operation in varying outdoor conditions.

A standout feature is its symmetric key design, which enables effortless locking and unlocking in low-light conditions, reducing user error and time spent during nighttime or inclement weather operations. This makes the chain lock particularly suitable for facility managers, retail bicycle shops, and bike fleet operators seeking efficient, easy-to-use locks for mid-value bikes parked in semi-secure environments or for short duration security near public infrastructure.

Key Features

• 6 mm hardened steel links ? provides resistance against cutting for standard protection applications


• 120 cm chain length ? allows securing bicycle frame and rear wheel to fixed objects


• Textile sleeve ? prevents scratching of bike paint and components during use


• Dust cap for keyhole ? shields lock mechanism from dust, sand, and mud


• Symmetric key ? enables quick operation in low visibility conditions including nighttime


• Key removable from both open and closed positions ? streamlines handling for multiple users


• Round profile links ? suitable for wrapping around saddle post or storing in bike bag

Technical Specifications

• Chain Link Diameter: 6 mm


• Chain Length: 120 cm


• Material: Hardened steel


• Protective Sleeve: Textile


• Lock Body Shape: Round


• Gerda Class: Standard Protection


• Key Type: Symmetric key


• Keyhole Cover: Yes

Applications

Widely used for securing bicycles in urban environments, retail shops, commercial fleets, and public transport hubs. Suitable for mid-value bikes parked temporarily in safe or monitored locations. Common for facility-managed bike racks, rental fleets, or OEM bike accessory procurement where basic security and fast, user-friendly operation are priorities.

Packaging & Shipping

Standard export packaging. Unit includes chain lock, protective textile sleeve, symmetric key, and user instructions for installation and operation.