The ROCKBROS Heavy Duty Bike U-Lock is designed to provide robust theft protection for bicycles, scooters, and e-bikes. Made from hardened alloy steel featuring a zinc alloy C grade lock cylinder, this lock resists cutting, drilling, and leverage attacks withstanding up to 12 tons of force. Its double locking shackle structure enhances security against prying and cutting attempts. Equipped with two rust-resistant copper keys that use complex serpentine slots, the lock ensures key duplication is difficult, offering an additional layer of security. The included mounting bracket allows for convenient and secure attachment to your vehicle, while the rust-resistant silicone coating protects your bike’s frame from scratches. This U-lock is a practical solution for riders seeking a durable and reliable anti-theft device.