KILAKILA Heavy Duty Security 10mm Chain lock SPECIFICATION: Inside the packing are: 16mm mini U lock +900mm/1200mm/160mm/2000mm chain+2 key Color: Black Weight: 3 FT: 2.9kg / 6.4lb 4 FT: 3.1kg / 6.8lb 5.25 FT: 4.95kg / 8.7lb 6.56 FT: 4.55kg / 10lb Size (There are four lengths to choose) : 0.9M/35inch: 900x12mm / 3 FT 1.2M/47inch: 1200x12mm / 4 FT 1.6M/63inch: 1600x12mm / 5.25 FT 2M/79inch: 2000x12mm / 6.56 FT Heavy Duty Motorbike Lock Features: 1. Alloy steel material, effective anti smashing, anti violence open, anti hydraulic scissors, high safety factor. 2. Powerful lock, wheel?frame?cushion a lock protection. solid steel chain, one lock, multiple locks, locking fixtures. 3. Strong anti-theft, steel chain and U-lock double protection, high safety performance. 4. An affordable U lock for moderate crime areas 12 mm hardened steel shackle Reinforced collar over key way for increased protection High security disc style cylinder High security Bent Foot design that are more ergonomic and reduce the amount of torque being applied, to stop them bending or breaking. 5. The clever design of U lock, the gray part can rotate to block and protect the lockhole, effectively waterproof, dust-proof and rust-proof, prolong the service life of the lock. The lock body is made of solid steel. After professional testing, 16 mm thick KILAKILA U lock needs to use professional cutting tools to hard cut at least 180S. Effective prevention of thieves.?SPECIFICATION?: 900mmx12mm (with 18 chains,durable steel and sturdy ABS material ensure the safety of your motorbike.) There are four lengths for you to choose from to meet your needs. ?DURABLE?: Nylon sleeve cover provides additional protection and helps prevent scratches on your bike/motorbike. U lock surface is made of non-toxic PVC material and reinforced rust alloy steel chain, in line with EU environmental standards. ?WIDE USE? : Perfect for everyone and applicable to motorcycles, electric cars,electric bikes,cars, tricycles, doors, grills, ladders. The chain lock is a perfect solution for protecting your bicycle and motorcycle, ATV or other valuables against theft. ?HIGH SECURITY? :Powerful locking, 16mm thick U lock, super anti-drilling design, anti-damage, with chain double protection, high safety performance. The dust-proof cover of the lock head is cleverly designed to prevent the lock head from entering water. Dust proof and rust proof,prolong service life. ?STRONG CHAIN?: 12mm thickened hexagonal chain is made of high strength hardened manganese steel, with higher hardness. Anti-saw and anti-shear, higher safety. Anti-rust coating on the surface of chain, anti-corrosion and anti-rust.