A Locking chain which can be opened with either a key or the combination lock
eBay
Motorcycle Bicycle Anti-Theft Chain 4-Digit Password Combination Helmet Lock Safety Portable Cable Lock Durable Wire Rope
Aliexpress UK
【Premium Quality Chain】Crafted from high-grade steel alloy, the 9.5mm thick chain is plated with yellow zinc for enhanced corrosion resistance. 【Double Protection】 This high-security lock combines a cut-proof 10mm thick chain and a 15mm U-lock, providing double protection against theft.
eBay
4 Feet Anti-theft Bicycle Lock Cable Coil with Mounting Bracket and Keys Bike Accessories Bike Lock Chain for Bicycle Safety
Aliexpress UK
Scratch-Resistant Padlock - Black. Plastic coating on the padlock further ensures durability and scratch resistance. Solid, rustproof construction featuring a 217 F 40 Ni Atlantic padlock. Shackle Thickness: 6 mm.
eBay
WEST BIKING Bicycle Anti Theft Chain Lock Hard Steel Alloy Durable Bold Lock For MTB Bike Motorcycle Scooter Cycling Accessories
Aliexpress UK
Ultimate bike security! 12mm hexagon section chain 11mm hardened steel closed shackle lock Protective textile outer sleeve protects paintwork and rims 1 Metre length
eBay
Durable Classic Helmet Lock Chain 4 Digit Password Combination Portable Scooter Bike Motorcycle Anti-theft Cable Lock
Aliexpress UK
Heavy duty chain and lock. Had little use. Been kept indoors so in good condition.
eBay
Heavy Duty Motorcycle Chain Lock 90cm Metal Anti Theft Bike Lock with 2 Keys for Maximum Security and Reinforcement of Bicycle
Aliexpress UK
The Oxford Large Chain and Lock with Keys is a high-quality security solution designed specifically for motorcycles. This durable chain and padlock combination is suitable for dual sport, street, and off-road motorcycles, providing peace of mind for riders looking to secure their bike with ease. With the trusted Oxford brand and a manufacturer part number for authenticity, this product is a reliable choice for motorcycle maintenance and security needs. VERY HEAVY. WORTH OVER £150 new
eBay
Bicycle chain lock outdoor waterproof metal heavy duty anti-theft car lock with key suitable for bicycles and motorcycles
Aliexpress UK
Classic, secure, and beautifully crafted — this Sterling Silver Gate Bracelet is an unusual piece designed to add effortless elegance to any jewellery collection. With a striking curved Gate Design it creates a distinctive look with its Secure Lock Clasp along with a Safety Chain for added security and peace of mind.
eBay
Xunting Bike Lock 4 Digit Combination Heavy High Duty Anti Theft Bike Chain Lock for Secure MTB Rides Easy to Use
Aliexpress UK
1M Sold Secure Gold 10mm Thick Chain. Special Alloy Case Hardened Steel.
eBay
90CM Bike Chain Lock MTB Road Bike Anti-theft Safety Password Bicycle Locks for Scooter Motorcycle Bike Accessories
Aliexpress UK