Blackstone Bike lock is an ultra-strong, independently approved 14mm shackle lock with hardened steel construction. As well as being an extremely secure lock, it has a built-in alarm triggered by movement sensors. It can also be locked without setting the alarm.

This bike lock comes with a 52 inches premium steel cable, and the whole diameter of the line is 1 inch thick, and it will provide your bike with greater locking flexibility and better protection. There are two ways to lock, one is to lock with an alarm, and the other is to lock without alarm.

The Blackstone offers a key replacement service. When you buy your Blackstone bike lock, note down the number attached to the keys on a metal tag. Please keep this in a safe place, and then it will be possible to get a new key made up for you when you lose all your keys.

• Blackstone bike lock with thickness 14mm, 254 mm x 83mm U shackle to lock and go! Locking your bike and your wheels with 10mm x 120cm cable, is fast and easy with our Quick, no-hassle system.
• World's Only 130db Loud Alarm System will automatically activate upon sensing any vibration or shock and is loud enough to scare off thieves. A loud Alarm System provides Maximum Protection for e-Bikes Electric Bikes Scooters & Motorcycles
• 5ft double-looped steel cable 12mm thick (including PVC covering). You can use the cable to lock the frame, your helmet, the wheels, or other bikes.
• The bike U-lock comes with 3 keys. One of them you can take and use in daily life and the others you can leave at home in case the trouble. Also It comes with a key replacement Code card from which we can help you to equip a new key when you lose them all.
• The package includes: 1 Alarm U Lock, 1 CR2 lithium battery, 3 keys, and 1 Cable.