The lock shackle is made of Steel. The Shackle is opened with a Key, the keyhole is covered by a cover that twists - when you wish to unlock it you can twist and open the keyhole, otherwise twist the other way which covers the keyhole.
eBay
Bicycle U Lock Anti-theft Heavy Duty Bicycle Locks MTB Road Bike Wheel Lock With KeyMotorcycle Scooter Cycling Accessories
Aliexpress UK
The Alarm-D is a high security D-lock with integral alarm. Keep this in a safe place, then in the event that you are unfortunate enough to lose all your keys, it will be possible to get a new key made up for you.
eBay
New bicycle password lock alloy steel tie lock mountain bike road bike three-position helmet lock cycling accessories
Aliexpress UK
> The lock shackle is made of Steel. The Shackle is opened with a Key, the keyhole is covered by a cover that twists - when you wish to unlock it you can twist and open the keyhole, otherwise twist the other way which covers the keyhole.
eBay
Xunting Bike Lock 4 Digit Code Combination Security Lock 77cm for Bicycle Equipment MTB Anti-theft Lock Mount Bike Accessories
Aliexpress UK
Ideal for bikes, scooters & motorcycles but can also be used to lock gates securely Features: U shaped heavy duty lock for bikes, scooters & motorcycles High security with hardened shackle Vinyl coated to protect paint work Heavy duty construction 2 keys included Gives peace of mind Easy to use.
eBay
ROCKBROS Bike Cable Lock MTB Road Bicycle Anti-Theft Password Lock PVC Steel Cable Lock for Motorcycle Scooter Bike Accessories
Aliexpress UK
Designed for maximum security, this lock features a hardened steel shackle to resist cutting and leverage attacks, making it an essential deterrent against theft for cyclists. Shackle Material: Hardened Steel for cut resistance.
eBay
DOMEN Bicycle Heavy Duty Chain Lock 8mm Thick Anti-Theft Steel With 2Keys Safety Lock Motorcycle Bike Lock Bicycle Accessories
Aliexpress UK
The Heavy Duty High Security D Lock is a durable and reliable bike lock designed specifically for MTB and road bikes. Made from steel with a security rating of A, this U-lock features a key mechanism for easy access. In a sleek black colour, this lock is perfect for keeping your bike safe while you're out on your ride. With its heavy-duty design, this lock provides peace of mind for cyclists looking to secure their bike with confidence.
eBay
Bike Anti-Theft Lock Electric Bicycle Brake Handlebar Grip Lock Portable Prevent Theft Bike Motorcycle Locks Cycling Accessories
Aliexpress UK
The cover automatically closes when the keys is removed, protecting the lock core from dust and ensuring smooth operation without the worry of blockages. Superior Durability: Crafted from high-strength A3 iron, the U-lock is built to withstand wear and tear, ensuring long-lasting safety.
eBay
Bike Lock Heavy Duty Anti Theft Bike U Lock with Security Steel Cable Shackle Bicycle U-Locks with Key & Sturdy Mounting Bracket
Aliexpress UK
Compact, durable, andIPX5 waterproof, it works in rain, snow, or sunny weather 🌦️. • Alarm Sensitivity: Adjustable 3 levels. ✔️Long Remote Range: 0–80m distance – locate your bike quickly. ✔️Remote Battery: 12V/27A included, standby over 1 year.
eBay
ETOOK Bike Horseshoe Lock Anti-Theft Bike Hardened Steel Pipe Lock Portable High Safety Road Mountain Bicycle Lock
Aliexpress UK