Safety chain for bikes made of 6 mm hardened steel with a high-security cylinder, anti-drill lock and a protective nylon cover to avoid damaging the bicycle. 90 cm long and 30 cm in diameter, it is an effective lock and an infallible anti-theft system for bikes. 

Dust and waterproof cover protecting the key cylinder

Reversible security key with notches and sawteeth

Material:

Heavy duty hardened steel along the entire chain

6 mm cross-section chain with nylon protective cover

Anti-pick and anti-drill lock

High security cylinder with steel ball bearings

Characteristics

Weight: 988 g

Size when unfolded: 900 mm

Diameter measurements: 6 mm