Specification Brand : ROCKBROS BulletPoint1 : Double Open Design-Combination Lock or Key Lock: 4-digit combination locking mechanisms for high security bike lock, our bike chain lock is resettable for 10,000 sets of passwords combination for the lock and the original password is”0000”.What’s more, it come with 2 keys, when you forgot the password, you can use the key to lock and open. BulletPoint2 : Thicker Bike Lock and Long Enough Chain: The diameter of this bike chain lock is up to about 17.19mm, which is strong enough to provide an anti-theft performance.Besides, the bicycle lock is 3.2ft(96cm) long, you can lock two or more bikes at the same time, which is more convenient. BulletPoint3 : High quality: This bike lock made of high-strength durable metal material.Zinc alloy lock cylinder, hardened steel material, and covered with ABS plastic,which is strong and sturdy. The heavy duty material makes the lock wear-resistant, rust-proof and cut-resistant. BulletPoint4 : Durable & Anti-slip Cloth Cover: A high-quality polyester protective sleeve is used to make the chain lock more smooth, durable and wear-resistant. It won’t scratch the body, protecting the perfect appearance of your bicycle. and no noise while riding. BulletPoint5 : Wide Application: The bicycle chain length 3.2 feet/ 96cm and weighs 0.93lb/420g. ROCKBROS Bike Locks prefect for motorcycles, bikes, e-bikes, gates, fence, and even lawn mowers, ladders, sports equipment etc. Note:Please don't leave your bike locked outside for long periods of time. Especially in high crime areas. No bike lock is 100% secure! Color : Black-Combination Lock ControllerType : Hand Control ControlMethod : application Department : unisex-adult ExternallyAssignedProductIdentifier : 8423885141217 FinishType : Sleeved GpsrSafetyAttestation : 1 IncludedComponents : 2 keys ItemDisplayDimensions_Height : 1.26 inches ItemDisplayDimensions_Length : 3.94 inches ItemDisplayDimensions_Width : 3.74 inches ItemDisplayWeight : 2.09 kilograms ItemName : ROCKBROS Heavy Duty Anti-Theft Bike Lock - 3.2FT Security Bicycle Chain Lock with Resettable Combination and 2 Keys for Bikes, Motorcycle, Door, Gate, Fence, Grill ItemPackageDimensions_Height : 23.0124 centimeters ItemPackageDimensions_Length : 4.5974 centimeters ItemPackageDimensions_Width : 15.0114 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : chain-bike-locks LockType : Combination Lock and Key Lock Manufacturer : ROCKBROS Material : Alloy Steel Material1 : Acrylonitrile Butadiene Styrene Material2 : Plastic Material3 : Metal Material4 : Zinc Material5 : Alloy Steel ModelName : 535 ModelNumber : 535 NumberOfItems : 2 NumberOfLithiumIonCells : 1 NumberOfLithiumMetalCells : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : 3230002001/USA ProductDescription : Products details: Products name:Bike chain lock Lock weight:0.42kg Combination type:4 digits resettable Material:polyester+zinc alloy+ABS Fits for:Bikes,motorcycle,scooter,yard door,e-bikes, gates, fence etc. Product features:: 1.Double Open Design: 4-digit combination lock that you could change your own, it is also come with 2 keys. 2.The diameter of this bike chain lock is up to about 17.19mm, which is strong enough to provide an anti-theft performance. 3.Made of Zinc alloy lock cylinder+ABS plastic heavy duty material which is more strong and sturdy. A high-quality polyester protective sleeve make the lock more smooth, durable and wear-resistant.It won’t scratch the bike body and no noise while riding.