Specification Brand : TEOOTD BulletPoint1 : 【Cut Resistant U Lock】Only 25mm inner diameter is smaller than ordinary u-shaped locks, making it difficult for hydraulic shear to enter the lock and preventing it from being cut easily. Bright-colored lock on your bike could be enough for them to decide to skip your bike and go on to the next one. BulletPoint2 : 【φ48mm Steel Ring】There's a steel ring on one side and a free steel ring. It has many ways to use it. Made of 3T manganese steel materials and heat treatment hardening technology. 10mm chain is thick enough to withstand 10KN tension and 20KN shear force. BulletPoint3 : 【4 Unique and Ergonomic Keys】One for daily use, the others are self-assigned and difficult to duplicate or wear out. The key can only be pulled out after locking to prevent key loss. Made of hard and durable stainless steel, never bend or twist. BulletPoint4 : 【Pure Copper Crescent Lock with Cover】Used normally after being damaged and hard to replicate. The keyhole is equipped with a cover to make it waterproof and dustproof, which can prevent damage to the keyhole and extend the service life. BulletPoint5 : 【Nylon Sleeve Cover】23 Chains are wrapped in the protective nylon sleeve cover, protect the chain from rusting and scratching, and also prevent damage to the bike. Secure it with rivets to prevent it from shifting. Color : Copper ControllerType : Ring ControlMethod : application Department : unisex-adult ExternallyAssignedProductIdentifier1 : 632770548408 ExternallyAssignedProductIdentifier2 : 0632770548408 FinishType : Unfinished GpsrSafetyAttestation : 1 IncludedComponents : 10mm thick chain, bright-colored lock, steel ring, 4 keys ItemDisplayDimensions_Height : 0.39 inches ItemDisplayDimensions_Length : 78.74 inches ItemDisplayDimensions_Width : 0.59 inches ItemDisplayWeight : 0.57 pounds ItemName : Heavy Duty Anti-Theft Motorcycle Chain Lock - 4ft/120cm Long, 10mm Thick Chain with Bright-Colored Lock, 4 Keys for Bicycle, Scooter (7.28lbs) ItemPackageDimensions_Height : 23.5 centimeters ItemPackageDimensions_Length : 6.4 centimeters ItemPackageDimensions_Width : 20.1 centimeters ItemShape : U Shape ItemTypeKeyword : chain-bike-locks LockType : Key Lock Manufacturer : TEOOTD Material : metal Material1 : Stainless Steel Material2 : Alloy Steel Material3 : Nylon ModelName : Tomvorkss6tqioe25p ModelNumber : TEOOTD NumberOfPieces : 1 PartNumber : 261 ProductDescription : Introducing the TEOOTD Bike Chain Lock, a heavy-duty anti-theft solution for your bicycle, scooter, or moped. This 4ft/120cm long chain lock is made of 10mm thick 3T manganese steel, providing robust protection against cutting and shearing forces. The lock itself features a bright color, acting as a deterrent to potential thieves. The set includes a pure copper crescent lock with a cover, ensuring long-lasting use and resistance to damage. Four unique and ergonomic keys are provided, one for daily use and three for backup, all made of hardened stainless steel. The chain is wrapped in a protective nylon sleeve cover, preventing rust, scratches, and damage to your bike. With its U shape and key lock mechanism, this lock is easy to use and secure. The item dimensions are approximately 38 x 48 x 1 inches (width x length x height), and it weighs 7.28 pounds. ProductSiteLaunchDate : 2021-11-07T06:48:59.619Z RecommendedUsesForProduct : Security Size : 4ft Chain Lock with Padlock Style : 4ft Chain Lock SupplierDeclaredDgHzRegulation : not_applicable TargetAudience : Adult-Unisex UnspscCode : 46171500