OnGuard's Mastiff Chain delivers protection for your bike in high-risk areas. Its hardened, 10mm square link chain resists attacks from saws and cutters, while the burly lock uses OnGuard's X2 dual-lockdown design to protect against picking, pulling, and bumping. This lock comes with five keys, including one with a built-in light.
All OnGuard locks feature integrated covers for protection from moisture and dirt.
OnGuard locks feature plastic, rubber or vinyl at all contact points to protect your bike's finish.