Thank you for viewing! ^_^ Metal cable lock with key. I am selling this as I have not used it after purchase. Perfect for security! The cable is 2m long ^_^ The square part of the key's body is about 3 x 3 cm. There are 3 keys included! I apologize that the key box is slightly crushed. For preventing theft of bicycles and helmets... Will be shipped via Yu-Packet Mini ^_^ Thank you! ^_^ Please consider! ^_^