The Newton NT110 uses an integrated lock housing with an automatic click in. This means that you do not have to turn the key to close the lock. The Newton comes standard with 2 keys, but if you want to order a spare key, the international online key service is available for you. This chain shows fashionable stainless steel details, the finishing touch to every bike. The strong polyester sleeve makes sure your bike will not be damaged. The Newton chain is key operated and 110 cm long.