Our secure and advanced bike chain lock will protect your bike against theft. The 5- combination allows 100,000 possible codes making it nearly impossible to crack. Best of all, it allows for keyless convenience. It is built to last, with durable cut resistance cable made from manganese steel and an protective exterior coating to prevent from scratches. Features - Color: Black. - Size: 60 x 1.5 x 1 - Material: Carbon steel & ABS. - This bike chain lock has advanced 5- combination lock, allowing 100,000 possible codes making it nearly impossible to crack. Keyless convenience. - Easy to set and reset your own number combination. - This bike lock is about 110cm long, for bicycles, bike, ladders, lawnmowers, gates, fences, boxes, bbq, equipments and etc. - A flexible cloth sleeve which covers the chains to protect it from being scratched and sawed, long lifespan. - Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Specification - Diameter: 5.7 - Perimeter: 110 - Weight: 772 g. Package list: 1 x chain lock