With slightly smaller, squared links compared to the BEAST chains, the MASTIFF series offers bicycle owners and powersport enthusiasts ultimate security for use in high crime areas. Oversized, titanium reinforced hexagonal links render hacksaws and bolt cutters virtually useless while tight inside link dimensions make prying impossible. Available in a wide variety of chain lengths and link sizes to match your security needs. 3.5' Rugged Chain with Boxer U-Lock Hexagonal and square links present more hardened surfaces than round links making sawing and cutting virtually impossible. Titanium surface hardening vastly increase cut and saw resistance. Embroidered nylon chain covers won’t crack or peel for long lasting beauty. Velcro tabs keep cover in place to help protect paint and finishes. Comprehensive selection of locks types, chain lengths and link size to exactly match security needs.