The OnGuard Mastiff 4 ft Combo Chain Lock offers convenient, lightweight keyless protection for bicycles, scooters, and everyday gear. The 120 cm (4 ft) chain uses titanium-reinforced hardened-steel square links designed to resist cutting and prying while remaining compact and easy to carry. A user-settable 4-digit Steel Ball Combo system delivers smooth, reliable operation without the need for keys, making it ideal for commuters, shared bikes, and quick stops. The durable protective sleeve helps prevent scratches to frames and components while reducing noise during transport. Designed for dependable everyday security, the Mastiff Combo chain lock balances portability, durability, and ease of use for urban riders.

• Keyless Combination Convenience: Resettable 4-digit Steel Ball Combo system provides quick, reliable locking without carrying keys.
• Titanium-Reinforced Chain Strength: 4 mm hardened-steel square-link chain engineered to resist cutting and prying attempts.
• Extended Everyday Protection: 120 cm (4 ft) chain length offers flexible locking reach for bikes, racks, poles, and gates.
• Protective Nylon Sleeve: Durable fabric cover helps prevent scratches to frames and components while reducing noise during transport.
• Durable Weather-Resistant Construction: Built with corrosion-resistant materials for dependable long-term outdoor use.


Manufacturer Sku: 8125
Todson Sku: 45008125