With 9.5 mm hardened steel round link chains. Oxford GP 10 mm Motorcycle Chain & Lock (2 M). Oxford GP Chain 10. Motorcycle Chain & Lock Features General purpose integral chain & lock. Integral lock head.
eBay
ROCKBROS Bike Cable Lock MTB Road Bicycle Anti-Theft Password Lock PVC Steel Cable Lock for Motorcycle Scooter Bike Accessories
Aliexpress UK
BOLT GP CHAIN LOCK WITH RS- H/D GROUND/WALL ANCHOR. HEAVY DUTY RS-ATOM GROUND/WALL ANCHOR. Advanced Disc Cylinder For Pick Resistance / Drill or Pull Attacks. Integral Lock Head.Hardened Steel Lock Body.
eBay
Bike Anti-Theft Lock Electric Bicycle Brake Handlebar Grip Lock Portable Prevent Theft Bike Motorcycle Locks Cycling Accessories
Aliexpress UK
[Anti-theft] The upgraded lock cylinder has a sophisticated structure and prevents technical unlocking. The 3 keys can be pulled out after being locked to prevent them from being forgotten. 【Anti-saw and anti-cut 】The chain lock body is made of durable steel and covered with black Oxford cloth.
eBay
Motorcycle Disc Brake Lock Anti Theft Motorbike Security Anti-theft Wheel Bicycle Scooter Small Portable Lock Disk Locks
Aliexpress UK
eBay
Anti-theft Electric Bike Disc Brake Lock High Strength Steel Bicycle Lock Portable Motorcycle Disc Lock With Key
Aliexpress UK
Oxford Loop Lock15 Chain Features Hardened steel padlock which doubles as a disc lock. No exceptions. High tensile steel, self-coiling cable.
eBay
1/2pcs 25-90cm Bike Spring Cable Lock Anti-Theft Rope Alarm Disc Lock Bicycle Security Reminder Motorcycle Theft Protection Lock
Aliexpress UK
I believe this is a motorbike security chain (the kind used to wrap through a wheel and onto something) but we bought it to secure bicycles to a motorhome bike rack. Only used for that one trip. Comes with three keys. Length is 88cm and each link is nearly 3 inches (see image). As I said, used only once and has sat in a box since. Only visible sign of use is slight weathering of the brand name on the exterior sheath. Note this is heavy duty and weighs a fair bit for its length. Any questions, just ask.
eBay
Motorcycle Helmet Lock, Universal Motorbike Anti Theft Helmet Lock Aluminum Alloy Security Padlock with for Bicycle Vehicles
Aliexpress UK
Protect your valuable bike or motorcycle with this heavy-duty 80cm steel chain lock. This ensures the lock is always within reach and your security is never compromised while you're riding. Secure & Lightweight: This steel wire lock combines powerful security with convenient portability, so you can easily carry it on your rides and confidently secure your bike when you need to park.
eBay
Bicycle Locks Anti-theft Mtb Bike Steel Wire Padlock 4Digit Password Electric Scooter Motorcycle Locks MTB Accessories 251208B
Aliexpress UK
Mammoth Square Motorcycle Chain & Shackle Lock 12 mm (1.2 M). The Mammoth square motorcycle chain & shackle lock is a no nonsense heavy duty motorcycle security solution for riders looking to keep their pride and joy secure and safe.
eBay
TOSUOD motorcycle bike portable anti-theft 4-digit password helmet lock zinc alloy lock PVC leather cover steel wire rope lock
Aliexpress UK