Features: High strength Alloys lock beam, Enduring, strong, safe antitheft, anticorrosion and antirust. Comes with 2 keys. You can take one of the keys for daily use while leaving another at home in case you accidentally lose one. The chain of this bike lock is enclosed in protective cloth sleeve that could effectively protect the chain from being rusted and scratches. Small size, easy to carry. It is not easy to break when pulling and cutting, and it is safe to use. The small bike chain lock can not only be used to lock bicycles, but also can used for motorcycles, scooter, balance bikes and strollers, door, fence, grills, lawn mowers, sports equipment, outdoor equipment, Tool box, ladder. Specifications: Materials: Alloys lock beam, coppers lock cores, iron chain Length option: 65cm(25.59inch)/85cm(33.46inch)/105cm(41.34inch)/125cm(49.21inch) Package Includes: 1pc Bike Chain Lock note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.