Chain Lock

3.5’ 10mm (0.39”) titanium reinforced hardened square link chain mated to an integrated X2P Dual Lock Down head featuring new double rubber cover for better protection against bumps and hits. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.

A short-shackle Boxer U-lock with X4P Quattro Bolt locking mechanism paired to a 3.5-foot long, 10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain. Boxer U-lock can also be used alone as a disc lock. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.

4’ 8mm (0.32”) titanium reinforced hardened square link chain mated to an integrated X2P Dual Lock Down head featuring new double rubber cover for better protection against bumps and hits. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.

4.22’ 10mm (0.39”) hexagonal link chain length saves weight yet clever cinch-loop design adds locking versatility. Short shackle Boxer U-lock with X4P Quattro Bolt locking mechanism eliminates pry points for superior protection. Boxer U-lock can also be used alone as a disc lock. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.

Longer 6’ 10mm (0.39”) titanium reinforced hardened square link chain with X2P Dual Lock Down head. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.

Longer 6’ 10mm (0.39”) titanium reinforced, hardened steel hexagonal link chain for more locking options. Boxer U-lock can also be used alone as a disc lock. Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features.