Mastiff series combo chain locks combine high security, flexibility of use, and the convenience of not having to carry a key.

• Chains made of titanium-reinforced, hardened steel square links that resist cutting or prying

• Chain cover protects paint and finishes, with an embroidered logo that won’t flake or wear off

• User-settable 4-digit combination

• Steel Ball Combo gear system resists picking and pulling

• All-metal endcaps provide protection against hits and drops