In addition, the 12mm thickness and the newly developed high-strength alloy materials ensure that it is tough enough. Only 3% of all other chain locks on the market use this material. It can be easily mounted around the bike seat.
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XUNTING Heavy Duty Bike Chain Lock Anti-Theft Steel Chain with Nylon Sleeve 360° Rotating Lock for Bicycle E-Bike Motorcycle
Aliexpress UK
With Sigtuna U-lock, you make the right choice and give thieves no chance! 【Keyless Convenience】This bike locks heavy duty anti theft, bike u lock combination has a 4-digit resettable combo is convenient without the need for keeping a key with you.
eBay
WEST BIKING Bike Anti Theft Chain Lock Hard Steel Alloy Durable Bold Lock For MTB Bike Motorcycle Scooter Cycling Accessories
Aliexpress UK
12mm hardened steel shackle for high security. Combo Bike U-Lock. Designed with the modern cyclist in mind, this lock marries function with form, providing high security without compromising on style or practicality.
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Alloy Steel Bicycle Motorcycle Locomotive Disc Brake Lock Waterproof Anti-Theft Security Sturdy Wheel Disc-Brake Lock
Aliexpress UK
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Falante New 110db anti-theft alarm Motorcycle Handlebar Lock Aluminum alloy Brake Grip Lock bicycle equipment adjustable
Aliexpress UK
Tough double locking padlock with hardened steel shackle which doubles as a disc lock;. FD-MOTO Anti theft Motorcycle Motorbike Alarm Brake Disc Lock. 100-110DB Loud alarm siren. Heavy-Duty ground anchor for use with chain lock;.
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Bike Lock 110dB Waterproof Security Bicycle Cable Lock with Remote Control 4-Digit Password Motorcycle Burglar Alarm for Oudoor
Aliexpress UK
This is a combination lock that is suitable for a wide range of security uses. It has an 8mm shackle that adjusts from 105-160mm and a weatherproof textured powder coated finish. The lock is preset at the factory to open at 0-0-0-0, and has a shackle size of 20 x 7.5 x 2.7 cm and a diameter of 8mm. It is a reliable and durable choice for anyone who needs a combination lock for their gates, sheds, windows, or doors. The lock is easy to use and is suitable for a wide range of applications. It is a handy tool to have on hand in any workshop or home.
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Safety Helmet Lock 4 Digit Password Combination Portable Bike Motorcycle Anti-theft Cable Lock Cycling Supplies
Aliexpress UK
Usability features include a double rubber coating to protect paint and internals and 4 laser-cut keys (including 1 with micro-light). For peace of mind, protect your bike with Yale. Ultra-hardened shackle for high cut and impact resistance.
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1Pc 4 Digit Combination Password Bike Lock Anti-theft Portable Security Cable Lock for Bicycle Motorcycle Scooter
Aliexpress UK
The Oxford Magnum motorcycle U-Lock is an ultra-strong motorbike lock ideal for riders on the go. The motorbike lock is constructed with hardened steel and has a 16 mm shackle lock which is super strong.
eBay
New Built-in Movement Sensor Security 110db Siren Alarm Lock Universal Anti-Theft Padlock for Bicycle Motorcycle Door Gate
Aliexpress UK