Blackstone Bike lock is an ultra-strong used 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. There are two ways to lock, one is to lock with alarm, and the other is to lock without an alarm. The Blackstone provides 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 U Lock which is cut-resistant, leverage-resistant, and drill-resistant, made with 14mm, high quality alloy steel. Covered in a 2mm silicone cover, the lock will stay protected from wear and tear, while also protecting your bike from scratches.
• The World's Only 130db Loud Alarm System will automatically activate upon sensing any vibration or shock and is loud enough to scare off thieves. Loud Alarm System provide Maximum Protection for e-Bikes Electric Bikes Scooters & Motorcycles
• 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 key replacement Code card from which we can help you to equip a new key when you lose them all.
• The Blackstone provides 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.
• The package includes: 1 Alarm U Lock, 1 CR2 lithium battery, and 3 keys.