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Blackstone Chain Bike Lock with 130 db Alarm, Heavy Duty 10 mm 4 ft chain with Six-sided Hardened Manganese Steel

Blackstone Chain Bike Lock with 130 db Alarm, Heavy Duty 10 mm 4 ft chain with Six-sided Hardened Manganese Steel

$69.99 USD
$69.99 USD $89.99 USD
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Blackstone chain lock is an ultra-strong used independently approved 10mm metal chain with hardened steel construction. As well as being an extremely secure lock, it has a built-in alarm triggered by movement sensors. There are two ways to lock, one is to lock with an alarm, and the other is to lock without an alarm. This Heavy Duty Chain uses a special anti-corrosion coating which makes it ideal for outdoor use; it also features a nylon sleeve against scratches to bicycle and motorcycle surfaces. Blackstone Security Alarm Chain Features Six-sided shaped links, much more effective against attacks from bolt cutters, saws, hammers, and chisels. It passed the Golden Bicycle Test approval, which stands for the best quality.

  • Blackstone chain lock is an ultra-strong used independently approved 10mm metal chain with hardened steel construction.
  • World's Only 120db 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.
  • Blackstone Security Alarm Chain Features Six-sided shaped links, much more effective against attacks from bolt cutters, saws, hammers, and chisels. It passed the Golden Bicycle Test approval, which stands for the best quality.
  • The Alarm Chain 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 package includes: 1 Alarm Chain Lock, 1 CR2 lithium battery, 3 keys, 1 bag.
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10mm shackle Blackstone Bike lock


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.

120db Loud Alarm System and automatic activation

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, 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. Loud Alarm System provide Maximum Protection for e-Bikes Electric Bikes Scooters & Motorcycles

The package includes: 1 Alarm Chain Lock, 1 CR2 lithium battery, 3 keys, 1 bag.

The Alarm Chain 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 package includes: 1 Alarm Chain Lock, 1 CR2 lithium battery, 3 keys, 1 bag.


Heavy Duty 10mm six-sided square-linked chain

This Heavy Duty 10mm six-sided square-linked chain links made of 2t HARDENED MANGANESE STEEL for ultimate strength, making it ideal for outdoor use.

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Small on Prices, Big on Features

Multi-user Sharing

Sharing important moment with your family anytime anywhere.

Doorbell Chim

Pickup distance up to 300 feet，you can hear chime no matter where you are home.

Tamper-proof Protection

If the doorbell is removed, an alarm will sound to deter intruders.

IP65 Waterproof

High quality and waterproof design provide you with long-lasting and durable protection.