OnGuard Mastiff 8020 chain lock

Defend your ride in high-crime areas with the ONGUARD Mastiff 8020 chain lock. Designed for both bicycles and powersports, it offers ultimate security with its 10mm titanium-reinforced, hardened square-link chain. These oversized links render hacksaws and bolt cutters virtually useless, while the tight design makes prying impossible. The chain is mated to an integrated X2P Dual Lock Down head for robust protection. A durable embroidered nylon cover protects your paint, and the lock includes 5 laser-cut keys, one with a handy micro-light for nighttime use