Onguard Mastiff Key Chain Lock

The Mastiff Chain Lock Series is designed for those who demand high-security solutions for their valuable possessions. Featuring the X2P Double Bolt Locking Mechanism and titanium-reinforced hardened steel square link chains, these locks are perfect for securing bicycles, motorcycles, and other equipment in high-risk environments.

• X2P Double Bolt Locking Mechanism provides ultimate pull resistance by locking the chain on both sides, ensuring top-level security.
• Z-Cylinder is bump-proof and resistant to picking, pulling, and drilling for robust protection against tampering.
• Titanium Reinforced Square Link Chain available in 10mm (0.39”) and 8mm (0.32”) thicknesses, resists cutting and prying for high-level security.
• Durable Coatings with new all-metal end caps and co-molded crossbar cover provide enhanced protection against impacts and environmental damage.
• Weather Resistance with an automatic keyway cover that protects lock internals from the elements, extending lock longevity.
• Protective Chain Cover with an embroidered logo maintains the lock’s appearance while preventing scratches on surfaces.