Mastiff series chains & locks are packed with features, and provide superior security for medium/high crime areas.

The premium Mastiff lock has our special X4P locking mechanism and Z-Cylinder for high security, and a big 5.5 cm X 5.5cm shackle that can even be used as a disc lock. Our chain has 10mm hexagonal links for high security, and the special sinch loop design offers even more versatility.

Features:

LOCK

– X4P Quattro Bolt Locking mechanisms secure the shackle at 4 points.

– Z-cylinder tumbler mechanism that is bump-proof and resists picking, pulling, or drilling.

– Short D-Shackle design eliminates pry points for superior protection.

– Heavy duty 14mm hardened steel shackle resists prying, cutting or jacking.

– Co-molded crossbar cover protects finishes.

– All-metal endcaps provide protection against hits and drops.

– Automatic keyway cover helps seal lock internals against the elements.

– Supplied with 5 laser-cut keys (1 with a micro LED).

– LIFETIME WARRANTY. All of our products are warranted to be free from mechanical defects for the lifetime of the product. *This does not include wear and tear, or physical damage caused by theft attempts.

CHAIN

– Chain made of 10mm thick, titanium-reinforced, hardened steel links that resist cutting or prying.

– Hexagonal links with tight inside dimensions render prying and bolt cutters useless.

– Clever cinch-loop design adds locking versatility.

– Chain cover protects paint and finishes, with an embroidered logo that wont flake or wear off.